Gentle stretching is one of the safest and most effective ways to relieve lower back pain during pregnancy, and up to 56% of pregnant people experience it. The key is choosing movements that work with your changing body rather than against it. Below are specific stretches you can start today, along with the modifications that keep them comfortable as your belly grows.
Why Your Lower Back Hurts During Pregnancy
Understanding the cause helps you stretch the right muscles. As your belly grows, your center of mass shifts forward. Your spine compensates by curving more deeply inward at the lower back, a posture called increased lumbar lordosis. This hyperextension loads the muscles, joints, and discs of your lumbar spine in ways they aren’t used to.
At the same time, your expanding abdomen weakens the deep core muscles that normally stabilize your spine. The transverse abdominis, the small muscles along your vertebrae, and the pelvic floor all lose some of their ability to support your lower back. The result is that the muscles running along the back of your body pick up the slack, which is why your lower back can feel tight, achy, or fatigued by the end of the day.
On top of all this, your body produces a hormone called relaxin throughout pregnancy. Relaxin loosens your muscles, joints, and ligaments to make room for your growing baby and prepare for delivery. That extra flexibility sounds helpful, but it also means you’re more prone to sprains and overstretching. The goal with every stretch below is gentle relief, not pushing your range of motion to its limit.
Six Stretches for Lower Back Relief
Start slowly and work up to about 10 repetitions of each stretch per day. Hold each position for several seconds (roughly 5 to 10), breathing steadily throughout. None of these should cause sharp pain. If something hurts, back off or skip it.
Cat-Cow (Low Back Stretch)
Start on your hands and knees with your head in line with your back. Pull your stomach in and round your back upward toward the ceiling, like an angry cat. Hold for several seconds. Then relax your stomach and let your back return to a flat, neutral position. Don’t let your back sag downward past flat. This alternating motion gently mobilizes the entire lumbar spine and is one of the most commonly recommended prenatal stretches because it feels good at every stage.
Child’s Pose (Backward Stretch)
From your hands and knees, keep your arms straight and slowly curl your hips back toward your heels as far as is comfortable for your knees. Tuck your head down between your arms and hold. You should feel a stretch through your lower back, pelvis, and thighs. As your belly gets bigger, widen your knees apart to make room. If getting onto the floor is uncomfortable, you can do this same movement with a fitness ball: kneel with your hands on the ball in front of you and curl back toward your heels while the ball supports your arms.
Standing Pelvic Tilt
Stand with your back against a wall, feet about shoulder-width apart. There will be a natural gap between your lower back and the wall. Now press the small of your back flat against the wall by gently tucking your pelvis. Hold for several seconds, then release. This stretch directly counteracts the exaggerated curve in your lower back and strengthens the muscles that support it. It’s especially useful because you can do it anywhere, no mat or equipment required.
Seated Torso Rotation
Sit on the floor with your legs crossed (or on a folded towel if that’s more comfortable). Hold your right foot with your left hand. Place your right hand on the floor behind you and slowly twist your upper body to the right. Hold, then return to center. Switch sides. This stretch targets the muscles along your spine and upper back that tighten as your posture shifts during pregnancy. Keep the twist gentle, especially in the third trimester.
Seated Piriformis Stretch
This one targets the piriformis, a small muscle deep in your buttock that can press on the sciatic nerve when it gets tight. Sit in a chair with your feet flat on the floor. Cross one ankle over the opposite knee in a figure-4 position. Keeping your back straight, lean forward gently until you feel a stretch in the back of your hip. Hold, then switch sides. If you’re experiencing shooting pain down your leg (sciatica), this stretch often provides the most noticeable relief.
Fitness Ball Pelvic Tilt
Sit on the floor with a fitness ball behind you and lean back against it. Keep your feet flat on the floor and your arms at your hips. Press the small of your back upward into the ball. Hold, then release. This is a good alternative to the standing version if you want more support. Have someone nearby the first few times you try it, since the ball can shift and throw off your balance.
Modifications as Your Belly Grows
In the first trimester, most of these stretches can be done exactly as described. The bigger adjustments come in the second and third trimesters as your belly expands and your center of gravity shifts further forward.
The most important change: avoid lying flat on your back after about 24 weeks. The weight of your uterus can compress a major blood vessel (the inferior vena cava), reducing blood flow and causing dizziness, lightheadedness, or nausea. This affects up to 8% of women in the second and third trimesters. If any stretch calls for a supine position, modify it by propping a wedge or rolled towel under your right side to tilt your pelvis at least 30 degrees to the left. Or simply choose standing and hands-and-knees variations instead.
For hands-and-knees stretches like cat-cow and child’s pose, widen your knees as your belly grows to avoid compression. A yoga mat or folded blanket under your knees helps with comfort. For seated stretches, sitting on a cushion or low block can relieve pressure on your hips. If getting up and down from the floor becomes difficult in the third trimester, the standing pelvic tilt and a chair-based piriformis stretch are your best options since they don’t require any floor work at all.
Avoiding Overstretching
Relaxin makes your ligaments looser than usual, which means stretches may feel easier than they did before pregnancy. That’s not an invitation to push deeper. Overstretching loose ligaments can cause joint instability and pain rather than relief. Aim for a gentle pull, not a deep stretch. If you feel wobbly or shaky during any movement, that’s a sign to ease off.
Stick to slow, controlled movements. Avoid bouncing in and out of stretches. And skip anything that requires balancing on one leg unless you have a wall or chair within reach. Your balance is genuinely different during pregnancy because of the forward shift in your center of mass, not just because of relaxin.
Building a Daily Routine
You don’t need to do all six stretches in every session. Pick three or four that feel most helpful and cycle through them once or twice a day. Morning stretching can ease stiffness from sleeping, and a short session before bed may help you get comfortable for the night. The Mayo Clinic’s general guidance is to start with a few repetitions and gradually build up to 10 reps of each stretch daily.
Consistency matters more than duration. Five minutes of stretching every day will do more for your back than a 30-minute session once a week. If you’re also walking, swimming, or doing prenatal yoga, these stretches fit easily into a warm-up or cool-down.
Pain That Stretching Won’t Fix
Most pregnancy-related lower back pain responds well to regular stretching. But some types of pain need a different approach. Pelvic girdle pain, which shows up at the front of your pelvis, the sides of your hips, or deep in the buttocks near the sacroiliac joints, can feel similar to lumbar pain but has different causes and may worsen with certain stretches, particularly wide-legged positions or asymmetric movements. If your pain is centered around your pelvis rather than your lower back, a physical therapist who specializes in prenatal care can help you figure out which movements to focus on and which to avoid.
Seek immediate medical attention if your back pain is sudden, severe, and doesn’t let up. Rhythmic lower back pain that comes and goes at regular intervals could signal preterm labor rather than a muscle issue. Pain paired with vaginal bleeding, fluid leaking, or numbness and weakness in your legs also warrants an urgent call to your provider.