Back pain affects the majority of pregnant women, typically starting in the second trimester and intensifying as the pregnancy progresses. The good news: a combination of targeted stretches, daily posture adjustments, and safe exercise can significantly reduce discomfort without medication. Here’s what actually works and how to do it.
Why Pregnancy Causes Back Pain
Your body undergoes two major changes that put stress on your lower back and pelvis. First, hormonal shifts increase levels of relaxin, estrogen, and progesterone, all of which loosen the ligaments and joints in your spine and pelvis to prepare for delivery. Relaxin levels rise by the end of the first trimester and stay elevated until birth, which means the structures that normally stabilize your lower back become increasingly flexible and less supportive.
Second, the growing weight of your baby shifts your center of gravity forward. Your posture changes to compensate, often pulling your lower spine into a deeper curve. This combination of looser joints and altered posture increases mechanical stress on the lumbar spine and pelvic girdle, which is why pain tends to settle in the lower back, the back of the pelvis, or both.
Four Stretches That Target the Right Muscles
Starting slowly and building to about 10 repetitions per day works well for most pregnancies. These stretches come from Mayo Clinic’s prenatal recommendations and focus on the muscles most affected by pregnancy posture changes.
Cat-cow (low back stretch): Start on your hands and knees with your head in line with your back. Pull your stomach in, rounding your back upward. Hold for several seconds, then relax your stomach and let your back return to neutral. This gently mobilizes the entire lumbar spine.
Child’s pose (backward stretch): From the same hands-and-knees position, curl backward toward your heels as far as your knees allow. Tuck your head down and keep your arms extended in front of you. Hold for several seconds. This stretches the back, pelvis, and thighs simultaneously.
Standing pelvic tilt: Stand with your back flat against a wall, feet shoulder-width apart. Press the small of your back into the wall and hold for several seconds. This is one of the most effective moves for lower back pain because it activates your deep core muscles while gently stretching the lumbar curve that pregnancy exaggerates.
Torso rotation: This targets the muscles in your mid and upper back, which often tighten to compensate for the forward pull of your belly. Seated or standing, gently rotate your upper body to each side, keeping your hips facing forward.
Exercise That’s Safe and Helps
The current recommendation from the American College of Obstetricians and Gynecologists is at least 150 minutes of moderate-intensity aerobic activity per week during pregnancy, spread across multiple days. A large systematic review found that exercising 35 to 90 minutes, three to four times per week, is not associated with increased risk of preterm birth in uncomplicated pregnancies.
Activities that have been extensively studied and found safe during pregnancy include walking, stationary cycling, water aerobics, dancing, resistance exercises with weights or bands, and stretching. Water-based exercise is particularly helpful for back pain because buoyancy takes weight off your joints while still building the core and back strength that supports your spine. Avoid contact sports, activities with high fall risk, and scuba diving.
Posture and Ergonomic Fixes
Small adjustments to how you sit, stand, and move throughout the day can make a noticeable difference, especially if you work at a desk.
- Lumbar support: Place a small rolled towel or lumbar roll at the hollow of your lower back whenever you sit. This prevents your pelvis from tilting backward and straining the lower spine.
- Chair position: Keep your hips and knees at 90-degree angles, feet flat on the floor or on a footrest. Distribute your weight evenly on both hips. Sit close to your desk so you’re not leaning forward.
- Move every 30 minutes: Avoid staying in the same seated position for longer than half an hour. Even standing briefly or shifting positions helps.
- Turn with your whole body: If you’re in a swivel chair, resist the urge to twist at the waist. Rotate the entire chair instead.
- Footwear: Low-heeled shoes with arch support are ideal. Completely flat shoes can actually strain the back as much as high heels because they offer no arch support.
How to Sleep With Less Pain
Side sleeping becomes the default position as pregnancy progresses, but it can create its own discomfort if your spine isn’t aligned. The key is strategic pillow placement. Put a pillow between your knees to reduce pressure on the hips and keep your pelvis level. A second pillow tucked under your belly prevents it from pulling your spine into rotation. Some women also place a pillow against their lower back for additional support.
Full-body pregnancy pillows do all of this at once, supporting belly, back, and knees in a single shape. They’re worth trying if you’re waking up with stiffness or pain, since maintaining spinal alignment through the night can reduce how much pain you start the day with.
Acupuncture as a Treatment Option
Acupuncture has solid evidence behind it for pregnancy-related back and pelvic pain. A 2024 systematic review and meta-analysis of randomized controlled trials found that acupuncture, both alone and combined with standard care, significantly reduced pain scores and improved physical function during pregnancy. It was also more effective than non-penetrating (sham) acupuncture, suggesting the benefit isn’t just placebo.
On the safety side, the same analysis found that acupuncture did not increase rates of drowsiness, dizziness, headache, or low blood pressure compared to standard care. Minor side effects like slight needle pain or small amounts of bleeding at the needle site occurred but were not serious. The research also suggested acupuncture may help reduce preterm birth and cesarean section rates, though more data is needed to confirm those findings. If you pursue acupuncture, look for a practitioner experienced in treating pregnant patients.
What Pain Medication Is Safe
Acetaminophen (Tylenol) remains the go-to option for pain relief during pregnancy. NSAIDs like ibuprofen (Advil, Motrin) and naproxen (Aleve) carry specific risks. The FDA warns against using any NSAID at 20 weeks of pregnancy or later because these drugs can cause kidney problems in the developing baby, leading to dangerously low amniotic fluid levels. After 30 weeks, NSAIDs pose the additional risk of prematurely closing a blood vessel in the baby’s heart.
The one exception is low-dose aspirin (81 mg), which is sometimes prescribed for specific pregnancy-related conditions under medical guidance. For general back pain, acetaminophen is the safer choice at any point in pregnancy.
Pain That Needs Immediate Attention
Most pregnancy back pain is muscular and positional, but certain patterns signal something more serious. Contact your provider or go to the hospital if your back pain is rhythmic and comes in waves (which can indicate preterm labor), if it’s accompanied by vaginal bleeding or fluid leaking, or if it’s sudden, severe, and getting worse over time. Back pain paired with a fever of 100.4°F or higher could point to an infection. Severe pain that radiates to your chest or shoulder also warrants urgent evaluation, as the CDC lists these among critical maternal warning signs.