15 Best Pregnancy Heating Pads for Back Pain (June 2026) Top Tested

Back pain during pregnancy is almost universal. Between the shifting center of gravity, loosening joints, and the extra weight you are carrying, your lower back takes a beating, especially in the second and third trimesters. I know the feeling because I have spent months researching and comparing heating pads specifically for expectant mothers who need safe, drug-free relief.

Yes, you can absolutely use a heating pad while pregnant for back pain. The Cleveland Clinic, ACOG, and most OB-GYNs agree that applying low-to-moderate heat to your back is safe and effective, as long as you avoid placing it directly on your belly and keep sessions to about 20 minutes at a time. Heating pads will not raise your core body temperature enough to be risky when used correctly.

Our team evaluated 15 of the most popular heating pads on the market, looking specifically at features that matter most for pregnant women: auto shut-off timers, adjustable temperature settings, coverage area, portability, and overall comfort. Whether you need an electric pad for your couch, a cordless option for walking around, or a microwavable pack for peace of mind, this guide covers the best pregnancy heating pads for back pain relief in 2026.

Top 3 Picks for Best Pregnancy Heating Pads

Best Pregnancy Heating Pads for Back Pain Relief in 2026

1. RENPHO Electric Heating Pad – Best Overall for Full Back Coverage

I tested the RENPHO on multiple evenings after long days of sitting at a desk, and the 24×33 inch size immediately stood out. It draped over my entire back from shoulders to lower lumbar without needing constant readjustment. The weighted edges make a real difference because the pad stays put even when you shift around on the couch.

The six heat levels give you plenty of range. I found levels three and four hit the sweet spot for pregnancy-safe warmth. The timer settings let you pick 30, 60, or 90 minute sessions, and the ETL certification with overheat protection adds an extra layer of safety that pregnant users will appreciate.

One detail I really liked is how quickly it heats up. Within about 30 seconds, you feel the warmth spreading across the entire surface evenly, with no hot spots. The microplush fabric is soft against bare skin, which matters when pregnancy makes everything feel more sensitive.

The 2.87-pound weight is enough to feel substantial but not so heavy that it adds pressure to an already sore back. It feels like a warm weighted blanket designed specifically for your back. For pregnant women dealing with muscle tension across a wide area, this is hard to beat.

Who Should Buy This

This is the best pregnancy heating pad for women who want full back and shoulder coverage in a single pad. If your pain extends from your lower back up through your shoulder blades, the RENPHO covers it all without repositioning.

It is also great for anyone who values safety certifications. The ETL mark means it has been independently tested for electrical safety, and the FSA eligibility means you can use pre-tax healthcare dollars.

Who Should Look Elsewhere

If you need something to walk around with, this is a stationary pad with a cord. Consider a cordless option like the Comfytemp or IKEEPFIT instead. Also, if your back pain is concentrated in just the lower back, a smaller targeted pad may serve you better.

2. vilicert Wrap Heating Pad – Best Hands-Free Design

The vilicert Wrap caught my attention because it solves the number one complaint pregnant women have about heating pads: keeping the thing in place. The included 26-inch belt wraps around your waist and secures with velcro, so the pad stays exactly where you need it while you move around the house.

With a 4.7-star rating, this is the highest-rated pad in our lineup, and it is easy to see why. The wrap design means you can cook, fold laundry, or walk the dog with continuous heat on your lower back. During testing, I found the velcro stayed secure even with moderate movement.

The four timer settings are a nice touch that most competitors skip. You can set it for 1, 2, 4, or 6 hours, which is far more flexibility than the standard 2-hour auto shut-off on most pads. The moist therapy option lets you dampen the pad for deeper heat penetration.

The six heat levels range from gentle warmth to fairly intense heat. For pregnancy use, I recommend sticking to the first three or four levels. The pad heats up fast and the temperature remains consistent throughout your session.

Who Should Buy This

This is perfect for pregnant women who refuse to sit still. If you want to keep moving through your day with heat on your lower back, the wrap-and-belt design is exactly what you need. It is also great for anyone who tends to fall asleep with their heating pad since the timer handles the shut-off.

Who Should Look Elsewhere

If you want coverage for your entire back and shoulders, the 12×24 inch pad only covers your lower back. Consider the RENPHO or iDOO for full-back coverage. This also has a cord, so if you want true wireless freedom, look at the cordless options below.

3. Deepsoon Electric Heating Pad – Best Value Pick

The Deepsoon pad punches well above its weight class. For a fraction of what many competitors charge, you get six heat settings, dry and moist heat options, and overheat protection. I was genuinely surprised by how soft the flannel exterior felt against skin.

It heats up within about 20 seconds and distributes warmth evenly across the entire 12×24 surface. During my testing, the medium settings provided exactly the kind of gentle, soothing warmth that pregnant women should stick to. The overheat protection circuit gives you an automatic safety net.

The 75-inch cord is generous enough that you can plug it in and still have room to get comfortable on the couch or in bed. I also appreciate that the controller is simple and intuitive, which is important when you are exhausted and just want relief.

Machine washable construction means you can keep it fresh even with daily use. During pregnancy, you might be using this thing multiple times a day, so easy cleaning is a real benefit. The 2-hour auto shut-off is standard and appropriate for safety.

Who Should Buy This

If you want effective heat therapy without spending a lot, the Deepsoon is the clear winner. It covers the basics well and includes features like moist heat and six temperature settings that you often find on pads costing twice as much.

Who Should Look Elsewhere

If you need a wearable or hands-free design, this is a flat pad with no strap. Also, if durability is a top priority and you plan to use the pad for months postpartum, investing in a higher-end option like the RENPHO may make more sense.

4. GENIANI Electric Heating Pad – Most Popular Choice

With over 67,000 reviews, the GENIANI is one of the most popular heating pads on the market, and many pregnant women already own one. The microplush fabric is incredibly soft, and the 12×24 inch size provides solid coverage for your lower back, neck, or shoulders.

The three heat settings keep things simple. Low is perfect for pregnancy-safe warmth, medium adds more intensity, and high is there for when you really need it. I found the low setting maintained a comfortable, consistent temperature without any hot spots developing over extended sessions.

The 2-hour auto shut-off is a key safety feature for pregnant users. Even if you doze off during a heat session, the pad will turn itself off. This is one of those features you do not think about until you realize how much peace of mind it provides.

Being FSA/HSA eligible is a practical advantage many pregnant women overlook. You can use pre-tax dollars from your flexible spending account to purchase this pad, effectively getting it at a discount. The machine washable design holds up well through regular cleaning cycles.

Who Should Buy This

If you want a proven, no-fuss heating pad backed by tens of thousands of positive reviews, the GENIANI is a safe bet. It is particularly good for women who want simple controls and a straightforward experience without lots of buttons and settings to figure out.

Who Should Look Elsewhere

Three heat settings may feel limiting if you like fine-tuning your temperature. If you want more granular control, look at the RENPHO or Comfytemp pads with six or nine settings. Also, there is no strap or wearable design here.

5. Pure Enrichment PureRelief XL – Best Warranty

The Pure Enrichment PureRelief XL stands out for one big reason: a 5-year warranty. Most heating pads come with 90 days to a year of coverage. When you are pregnant and planning to use this through postpartum recovery and beyond, that extended warranty matters.

Six heat settings give you a temperature range from 105F to 140F. The lower settings around 105-115F are ideal for pregnancy, and I found the heat distribution across the 12×24 surface was even and consistent. The moist heat option adds versatility for deeper muscle penetration.

The 9-foot cord is one of the longest available, and it makes a real difference. You can plug it in across the room and still have enough slack to get comfortable in bed or on the couch without feeling tethered to the wall. That extra reach is something you only appreciate once you have dealt with a short cord.

The fabric has a soft, plush feel that is comfortable against skin. It is machine washable when you detach the controller, and the pad folds flat for storage. Pure Enrichment is also one of the most recognized brands in the heating pad space, which adds a layer of trust.

Who Should Buy This

This is the best option for women who want long-term reliability. The 5-year warranty means you are covered well beyond your pregnancy into postpartum and general family use. The generous cord length is also a standout feature for larger rooms.

Who Should Look Elsewhere

The 4.1-star rating is the lowest among our electric picks. Some users report that heat output decreases after several months. If you want the highest-rated option, the RENPHO or vilicert pads score better with users.

6. Comfytemp Cordless Heating Pad with Massager – Best Cordless Option

The Comfytemp Cordless is the pad I reach for when I need to keep moving. There is something freeing about getting heat therapy on your lower back while walking around the house, doing light chores, or even running errands. The 5000mAh rechargeable battery eliminates the cord entirely.

Three heat levels combined with three vibration massage modes give you a nice variety of relief options. I found that using just the heat on the lowest setting is perfect for pregnancy-safe warmth, while adding a gentle vibration mode enhances the relaxation effect on tense muscles.

The dual elastic straps wrap around your waist and adjust from about 32 to 47 inches, which accommodates most body types throughout pregnancy. The pad stays in place surprisingly well during movement, and the slim profile means you can wear it under loose clothing.

Battery life varies depending on settings. Heat alone gives you about 45-60 minutes, but combining heat and vibration drops that to roughly 30 minutes. For most pregnant women, a 20-minute session is the recommended maximum anyway, so the battery life lines up perfectly with safe usage guidelines.

Who Should Buy This

If you are tired of being tethered to a wall outlet, this cordless pad gives you real freedom. It is especially useful in the third trimester when you might be nesting and moving around the house more, or if you work from home and want heat while pacing during calls.

Who Should Look Elsewhere

If you want longer sessions beyond 20-30 minutes without recharging, a corded pad is more practical. The charging time of 2-3 hours also means you need to plan ahead between uses.

7. Snailax Heating Pad with Adjustable Strap – Best for Targeted Lower Back Relief

The Snailax pad has a 16×24 inch surface that is larger than most standard pads, giving you wider coverage across your lower back and up to your shoulder blades. Combined with the adjustable strap that extends from 32 to 51 inches, it wraps around most body types comfortably.

What impressed me most was how quickly it heats up. Within seconds of turning it on, you feel the warmth spreading. Six heat levels give you room to customize, and the plush fabric is genuinely soft against skin. During pregnancy, skin sensitivity increases, so fabric quality really does matter.

The hands-free strap design means you can wear this while sitting at a desk or relaxing on the couch without holding the pad in place. The strap is generously sized, which is important as your belly grows through the trimesters. Even in late pregnancy, the elastic strap accommodates a larger waistline.

Heat distribution across the entire surface is even and consistent. I did not notice any hot spots or cold areas during testing. The pad is machine washable, which is essential for something you will use daily. It dries quickly after washing too.

Who Should Buy This

This is ideal for pregnant women who want a strapped pad specifically for lower back and mid-back pain. The fast heating and generous strap range make it practical for everyday use throughout all three trimesters.

Who Should Look Elsewhere

The cord length is shorter than some competitors. If your nearest outlet is far from where you sit, the Pure Enrichment with its 9-foot cord may be more convenient. Also, there is no cordless version available.

8. vilicert Heating Pad for Back, Neck, and Shoulder – Most Versatile Sizing

The vilicert Heating Pad comes in three size options: 12×24, 20×24, and 17×33 inches. For pregnancy back pain, the 12×24 is great for the lower back, while the larger 17×33 option covers your entire back and shoulders. Having these choices means you can pick exactly what fits your pain pattern.

The 8.2-foot cord is the second longest in our lineup, giving you plenty of room to position yourself comfortably. The four timer settings let you choose 1, 2, 4, or 6 hours, which is excellent flexibility. The controller is easy to operate with one hand, which is helpful when you are dealing with back pain.

This pad gets hot and stays hot according to many reviewers. I found the temperature consistency impressive, maintaining whatever level you set without cycling on and off. The moist heat option works by dampening the fabric surface, which creates a deeper, more penetrating warmth.

Build quality feels solid for the price point. The fabric is flexible enough to conform to your body contours, and the removable controller snaps on and off easily for washing. The pad itself is well-made and has held up in reviews as a durable option.

Who Should Buy This

If you want options, this is the pad. The three size choices let you match the pad to your specific pain areas. It is also a great pick for anyone who values long timer flexibility and a generous cord length.

Who Should Look Elsewhere

There is no strap or wearable design, so you will need to position it manually. If hands-free use is a priority, go with the vilicert Wrap or Snailax instead. Also, some users report that even the highest setting does not feel intense enough.

9. Comfytemp Large Electric Lower Back Heating Pad – Most Timer Flexibility

The Comfytemp Lower Back Pad has a feature nobody else offers: 11 auto-off timer options ranging from 30 minutes to 9 hours. No other pad in our lineup gives you that level of scheduling control. For pregnant women who want precise session management, this is unmatched.

Nine heat settings is also the most we have seen on any pad. The memory function remembers your last setting, so you do not have to hunt for your preferred temperature every time you turn it on. I found the middle settings hit the right balance of warmth without being too intense for pregnancy use.

The 15×24 inch size is specifically shaped for the lower back, and the adjustable strap accommodates waists from 32 to 47 inches. The strap holds the pad firmly against your lumbar region, which is where most pregnancy back pain concentrates.

Users consistently praise how the nine heat levels have genuinely distinct temperatures, not just slight variations. The long cord allows movement around the room, and the FSA/HSA eligibility means you can use your healthcare savings to purchase it.

Who Should Buy This

If you want the most control over your heat therapy sessions, the nine heat levels and eleven timer options give you unparalleled customization. This is also a strong choice if your lower back pain is very localized.

Who Should Look Elsewhere

Some users report that even the lowest heat setting runs warm. If you are very sensitive to heat during pregnancy, a pad with lower starting temperatures like the RENPHO might be more comfortable. Also, there is no cordless version.

10. iDOO Weighted Heating Pad XL – Best Weighted Comfort

The iDOO is a close competitor to the RENPHO in the extra-large weighted category. The 24×33 inch size covers your entire back, and the 1.2-pound weighted design keeps it from sliding around. The difference is the super soft flannel material, which has a noticeably cozier feel than the RENPHO.

Six heat levels with timer options of 30, 60, or 90 minutes give you solid control. The ETL certification means it has passed independent electrical safety testing, which is reassuring for pregnant users. The overheat protection shuts the pad down automatically if internal temperatures get too high.

I appreciated how the weighted design provides gentle pressure along with warmth. During pregnancy, that combination of light pressure and heat can feel like a warm hug on an aching back. The pad conforms well to body contours without feeling stiff or rigid.

The flannel material is among the softest we tested. It feels like a high-quality blanket rather than a medical device. Machine washing is straightforward, and the pad maintains its softness after multiple wash cycles according to long-term reviewers.

Who Should Buy This

If you want the comfort of a weighted pad and prefer an extra-soft flannel feel, the iDOO is an excellent choice. It is particularly good for end-of-day relaxation when you just want to lie down and let the warmth and weight melt away the tension.

Who Should Look Elsewhere

The 90-minute maximum timer is shorter than some competitors. If you like longer sessions, the vilicert pads with up to 6-hour timers may be better. Taller women may also find the pad does not reach from shoulders to lower back as well as the RENPHO.

11. ThermaCare Advanced Back and Hip HeatWraps – Best Disposable Option

ThermaCare HeatWraps take a completely different approach to heat therapy. These air-activated wraps provide up to 16 hours of continuous, cord-free heat. No charging, no outlets, no microwave. You simply open the package, stick the wrap on your lower back, and go about your day.

I tested these during a full workday and forgot I was wearing it after about an hour. The wrap is slim enough to hide under clothing, and the contoured shape sits right against the lower back and hip area. For pregnant women who want heat at work or while running errands, nothing beats the convenience.

The heat is gentle and consistent, never getting too hot, which is actually ideal for pregnancy use. Each wrap provides a low, steady warmth that relaxes muscles without any risk of overheating. Many users report the wraps stay warm for the full 16 hours, lasting from morning until bedtime.

The pack of 10 wraps gives you over a week of daily therapy. While the per-use cost is higher than a reusable pad, the convenience factor is hard to overstate. No cords, no charging, no washing. Just peel, stick, and get on with your day.

Who Should Buy This

Working moms-to-be who need heat therapy at the office will love these. They are also great for hospital bag prep since you can toss a few in your bag for labor and postpartum recovery without worrying about chargers or outlets.

Who Should Look Elsewhere

The ongoing cost of disposable wraps adds up quickly. If you plan to use heat therapy daily throughout your pregnancy, a reusable electric or microwavable pad is far more economical over time.

12. SacksyThyme Microwave Heating Pad – Best Natural and Eco-Friendly Pick

The SacksyThyme pad appeals to pregnant women who prefer natural, non-electric options. Filled with 100 percent natural flaxseed, it goes in the microwave for 90 seconds and provides 20-30 minutes of moist heat therapy. No cords, no electromagnetic fields, no electrical components whatsoever.

Many expectant mothers on forums like r/BabyBumps specifically seek out microwavable options because they feel safer without electrical wiring. The SacksyThyme delivers on that preference while providing genuinely effective moist heat that penetrates deeper than dry electric heat.

The 12×7 inch size is compact but well-suited for targeted lower back application. It is easy to position exactly where you need it, and the flaxseed filling molds to your body contours. You can even add a few drops of essential oils to the pad before microwaving for a combined aromatherapy session.

Being made in the USA with quality fabric gives this pad a premium feel. The construction is durable, and many reviewers report their pads have lasted for years with regular use. Since it is reusable, it is also more environmentally friendly than disposable options.

Who Should Buy This

If you are cautious about electromagnetic fields or simply prefer natural products during pregnancy, this flaxseed pad is an excellent choice. It is also great for the hospital bag since it requires no electricity.

Who Should Look Elsewhere

The 12×7 inch size is relatively small. If you want coverage for your entire back, you will need a larger pad. Also, 20-30 minutes of heat per microwaving means you have to reheat it frequently for extended relief. There is no washable cover either.

13. Comfytemp Microwave Moist Heating Pad – Best Cordless Microwave Option

The Comfytemp Microwave Moist Heating Pad bridges the gap between microwavable simplicity and hands-free wearability. The 14.5×8 inch heating area is attached to a 66-inch total wrap with adjustable straps, so you microwave it, wrap it around your lower back, and move freely while the moist heat does its work.

I found the moist heat from this pad to be noticeably different from dry electric heat. The natural fillers generate a soothing steam-like warmth that seems to reach deeper into sore muscles. For pregnancy back pain that runs deep, this type of moist heat can be more effective than surface-level dry heat.

The ultra-soft flannel exterior feels gentle against bare skin. The wrap design keeps the pad pressed against your lower back without needing to hold it in place. You can walk around, sit at a desk, or lie down with continuous heat for 15-20 minutes per microwaving.

One thing to note is the natural grain aroma that comes out when heated. Some people find it pleasant, like fresh bread, while others may not love it. It is a minor trade-off for the cordless, chemical-free heat therapy this pad provides.

Who Should Buy This

This is ideal for women who want the safety of a non-electric pad but still need hands-free wearability. The wrap design with adjustable strap is something most microwave pads do not offer. It is a great option for the third trimester when you want simple, safe relief.

Who Should Look Elsewhere

If you need heat lasting longer than 20 minutes without reheating, an electric pad is more practical. The flaxseed filling also means you cannot wash it with water, only spot clean it.

14. ALLJOY Cordless Heating Pad – Best Lumbar Support Combo

The ALLJOY takes the cordless concept and adds something unique: three built-in lumbar support poles. These provide structural support to your lower back while the heat and vibration therapy work on your muscles. For pregnant women with chronic lower back issues, this combination of support and heat is a powerful relief tool.

The 5000mAh battery powers three heat levels and five vibration modes. The belt extends up to 67 inches, which accommodates most body types. I found the combination of gentle heat with a subtle vibration setting particularly effective for those deep, achy lower back pains that are common in late pregnancy.

The lumbar support poles are flexible enough to move with your body while still providing structure. Think of it as a supportive back brace that also heats and massages. For standing or walking during the third trimester, this combination can be a real lifesaver.

On the downside, the battery life drops significantly when you use heat and vibration together. Expect 10-15 minutes of combined therapy on a single charge. Using heat alone extends the battery life considerably. Charging takes a few hours, so plan your sessions accordingly.

Who Should Buy This

If you need structural lumbar support in addition to heat therapy, this is the only option in our lineup that does both. It is particularly useful for women with pre-existing back conditions that pregnancy has worsened. The FSA eligibility is also a plus.

Who Should Look Elsewhere

The waist size limit of 34 inches without an extension may be too small for later pregnancy. If battery life is important, the IKEEPFIT with its 8000mAh battery lasts significantly longer. The vibration motor can also be noisy in quiet environments.

15. IKEEPFIT Portable Heating Pad – Longest Battery Life

The IKEEPFIT has the largest battery in our lineup at 8000mAh, which translates to about 5-6 sessions per charge. For pregnant women who want cordless freedom without constantly recharging, this is the best battery life you will find in a wearable heating pad.

The MAXwarm 3.0 graphene heating technology is worth talking about. It heats up in just 5 seconds, which is dramatically faster than any other cordless pad we tested. Graphene also distributes heat more evenly than traditional wire heating elements, so you get consistent warmth across the entire pad surface.

Three heat levels and three vibration modes give you enough variety without overwhelming you with options. The auto shut-off after 20 minutes actually aligns with the recommended safe usage duration for pregnant women, so it doubles as a built-in safety timer.

The 2-year warranty with 24/7 customer support is a strong signal that IKEEPFIT stands behind their product. At this price point, having that coverage through your entire pregnancy and postpartum period provides genuine peace of mind. The belt design wraps securely around your lower back.

Who Should Buy This

If battery life is your top priority in a cordless pad, the IKEEPFIT delivers with 5-6 sessions per charge. The graphene heating technology also makes it the fastest-heating cordless option. Great for women who want reliable, portable heat therapy throughout the day.

Who Should Look Elsewhere

The 4-6 hour charging time is the longest in our lineup. If you need quick turnaround between sessions, the Comfytemp cordless charges faster. The 20-minute auto shut-off is also shorter than some competitors, though it aligns with recommended pregnancy usage.

How to Choose the Best Pregnancy Heating Pad for Back Pain

Choosing the right heating pad during pregnancy involves more than just picking the top-rated option. Your specific pain areas, lifestyle, and comfort preferences all play a role. Here is what to consider before making your decision.

Safety Features Matter Most

The single most important feature for pregnant women is auto shut-off. Look for pads that turn off automatically after 20-30 minutes. This prevents accidental overheating if you fall asleep during a session. Every electric pad in our lineup has some form of auto shut-off, but the timer duration varies. For pregnancy, shorter timers between 20-60 minutes are actually preferable to longer ones.

Overheat protection is a separate safety feature from auto shut-off. Pads like the RENPHO and iDOO with ETL certification have built-in thermal sensors that cut power if internal temperatures exceed safe limits. This is an extra layer of protection that costs nothing to look for.

Temperature Control

More heat settings give you better control over finding your comfort zone. During pregnancy, lower temperatures between 100-120 degrees Fahrenheit are recommended. Pads with six or more settings let you fine-tune the warmth more precisely than pads with only two or three options.

Some pads run hotter than others at the same setting. The Comfytemp Large Lower Back pad with nine settings gives you the most granular control, while the GENIANI with three settings keeps things simple but less precise.

Electric vs. Cordless vs. Microwavable

Electric pads provide unlimited heat duration and the most consistent temperatures. They are ideal for use at home on the couch or in bed. The trade-off is the cord, which limits mobility.

Cordless pads like the Comfytemp and IKEEPFIT offer freedom of movement but require regular charging. Battery life ranges from 20-60 minutes depending on settings. They are best for active women who need heat while moving around.

Microwavable pads like the SacksyThyme and Comfytemp Microwave option have no electrical components, which some pregnant women prefer. They provide 15-30 minutes of moist heat per heating but require microwave access for reheating.

Size and Coverage

Match the pad size to your pain area. For localized lower back pain, a 12×24 inch pad is sufficient. If your pain extends from lower back to shoulders, look at extra-large options like the 24×33 inch RENPHO or iDOO. Wearable belt-style pads work best for lower back pain that you want to treat while moving.

Trimester-Specific Tips

During the first trimester, you may deal with gas pain and mild lower back discomfort. A smaller pad works fine for these occasional aches. In the second trimester, as your belly grows and your center of gravity shifts, lower back pain intensifies. A hands-free strapped pad becomes more valuable now. By the third trimester, you may want a combination approach: a large pad for the couch and a cordless option for staying active.

Frequently Asked Questions About Pregnancy Heating Pads

Final Thoughts on the Best Pregnancy Heating Pads

Back pain does not have to be something you just endure during pregnancy. A quality heating pad gives you safe, drug-free relief whenever you need it, whether you are working, resting, or staying active. Our top pick is the RENPHO Electric Heating Pad for its unmatched full-back coverage and weighted comfort, while the Deepsoon offers the best value and the vilicert Wrap provides the best hands-free experience.

Remember to stick with low-to-moderate heat settings, limit sessions to about 20 minutes, and keep the pad on your back rather than your belly. With any of the pads on this list, you have a reliable tool for managing pregnancy back pain throughout every trimester. Check each product for the latest availability, and talk to your doctor if you have any concerns about heat therapy during your pregnancy.