About 40% of pregnant women experience back pain at some point during pregnancy, most commonly in the second and third trimesters. The good news: most pregnancy-related lower back pain responds well to a combination of movement, support, and small adjustments to how you go about your day. Here’s what actually helps.
Why Pregnancy Causes Lower Back Pain
Your body produces a hormone called relaxin during pregnancy that loosens the muscles and ligaments around your pelvis, back, and abdomen. This loosening is essential for making room for a growing baby and eventually for delivery, but it comes with a trade-off: your lower back and pelvis become less stable, which can leave you feeling weak or wobbly. That instability is a major reason so many pregnant women feel pain across one or both sides of the lower back.
On top of that, the weight of your growing uterus shifts your center of gravity forward. Your posture changes to compensate, which places extra strain on the muscles and joints of the lumbar spine. These two forces working together, looser joints plus a shifting load, explain why back pain tends to get worse as pregnancy progresses.
Exercises That Strengthen Your Core and Back
Strengthening the deep abdominal muscles (specifically the transverse abdominis, the muscle that wraps around your torso like a corset) is one of the most effective things you can do. These muscles act as a natural brace for your spine. Pelvic tilts are a simple starting point: get on your hands and knees, gently arch your back upward while tightening your belly, hold for a few seconds, then release. Cat-cow stretches follow the same position and help loosen tight back muscles at the same time.
Walking and swimming are also reliably helpful. Both are low-impact, keep your joints moving without jarring them, and build the endurance your back muscles need to support your changing body. Even 20 to 30 minutes of walking most days can make a noticeable difference. Prenatal yoga classes are another option, since they’re specifically designed to build stability and flexibility in the areas pregnancy puts under stress.
How a Belly Band or Support Belt Helps
Maternity support belts and belly bands work by taking some of the load off your lower back and pelvis. They’re particularly helpful for sacroiliac (SI) joint pain, that sharp pain near the tailbone that can feel excruciating during certain movements. A well-fitted support garment stabilizes the joint and can prevent pain flare-ups during activities like walking or standing for long periods.
That said, these garments work best as a complement to exercise, not a replacement. Wearing one for more than two to three hours at a time can lead to overdependence, meaning your core muscles don’t get the activation they need to support your spine on their own. Think of a belly band as a tool for your toughest moments, like a long grocery trip or a day on your feet at work, while continuing to do core-strengthening exercises alongside it.
Sleep Position and Pillow Setup
Side sleeping is the standard recommendation during pregnancy, but it can create its own back pain if your spine isn’t properly aligned. The simplest fix is placing a pillow between your knees. This keeps your hips level and prevents your top leg from pulling your pelvis forward, which strains the lower back. A second pillow tucked under your belly can support the weight of your uterus so it doesn’t drag your spine into an awkward curve.
Full-length body pillows are popular for a reason: you can clutch the top portion and tuck the bottom between your thighs, which keeps you on your side and supports multiple points at once. Some women also place a small pillow behind their lower back for additional support. Experiment with configurations until you find one that lets you wake up without stiffness.
Shoes and Daily Ergonomics
Footwear matters more during pregnancy than you might expect. The Mayo Clinic recommends low-heeled shoes with good arch support, like walking shoes or athletic sneakers. High heels push your balance even further forward and strain your lower back muscles. Completely flat shoes like flip-flops aren’t ideal either, since they offer no arch support. A slight, stable heel is the sweet spot.
How you lift and bend also plays a role. When picking something up off the floor, squat by bending your knees and keeping your back straight rather than hinging at the waist. Let your legs do the work. If you have a toddler who wants to be picked up, kneel down to their level first. When standing for long stretches, try placing one foot on a low stool or step to take pressure off your lower back, and switch feet every few minutes.
Massage During Pregnancy
Prenatal massage can reduce back pain, decrease stress, ease symptoms of depression, and increase overall feelings of well-being. Choose a massage therapist who is specifically trained to work with pregnant women, since body positioning and pressure techniques differ from a standard massage.
A few things to keep in mind: massage safety hasn’t been well studied in the first trimester, so some providers recommend waiting until the second trimester. Avoid massage techniques that use heat on the abdomen or lower back (like hot stones or hot towels), since overheating during pregnancy can increase the risk of complications. Deep tissue massage also hasn’t been well studied in pregnancy, so gentler techniques are the safer choice. Later in pregnancy, some therapists offer to press on specific points thought to induce labor. Research hasn’t shown this actually works, but it’s best to skip those pressure points until you’re at least 39 weeks along.
Acupuncture: What the Evidence Shows
Acupuncture is generally considered safe during pregnancy. Available studies haven’t shown an increased risk of birth defects or pregnancy complications. However, the evidence for pain relief is less convincing. Studies haven’t clearly demonstrated that acupuncture helps with pain during pregnancy, so it may not be the most effective use of your time and money compared to exercise and physical therapy.
If you do try it, make sure the practitioner uses single-use, sterile needles (never reused from other clients) and is aware of the acupuncture points thought to stimulate labor. As with massage, those points are best avoided until at least 39 weeks.
Pain Medication Safety
Acetaminophen (Tylenol) is the go-to over-the-counter pain reliever during pregnancy. Common anti-inflammatory medications like ibuprofen (Advil, Motrin) and naproxen (Aleve) belong to a class called NSAIDs, and the FDA warns against using them at 20 weeks of pregnancy or later. At that stage, NSAIDs can cause rare but serious kidney problems in the developing baby, leading to dangerously low amniotic fluid levels. After 30 weeks, the risk increases further because NSAIDs can cause premature closure of a blood vessel the baby needs before birth.
The one exception is low-dose aspirin (81 mg), which is sometimes prescribed for specific pregnancy-related conditions. But this is a decision made with a healthcare provider, not something to take on your own for back pain.
Signs That Need Prompt Attention
Most pregnancy back pain is uncomfortable but not dangerous. However, certain symptoms alongside back pain warrant a call to your provider. Rhythmic lower back pain that comes and goes at regular intervals could be a sign of preterm labor, especially before 37 weeks. Back pain with a fever of 100.4°F or higher may indicate an infection. Numbness, tingling, or weakness shooting down one or both legs suggests nerve involvement like sciatica, which sometimes needs specific treatment.
Severe belly pain that starts suddenly, gets worse over time, or doesn’t go away is also a reason to seek care promptly, as is extreme swelling in your hands or face. These can signal conditions unrelated to typical musculoskeletal back pain that require different management.