Back Pain During Pregnancy: Physical Therapy and What Helps

What causes back pain during pregnancy?

Back pain in pregnancy has multiple overlapping contributors:

• Postural changes: As the uterus grows, the center of gravity shifts forward, increasing lumbar lordosis (the curve in the lower back) and placing additional demand on the back muscles and ligaments.
• Hormonal changes: Relaxin and other hormones loosen ligaments throughout the body to prepare for delivery, including in the pelvis and spine. This increased joint mobility can reduce stability.
• Pelvic girdle pain (PGP): A distinct and common condition affecting the sacroiliac joints and/or the pubic symphysis. PGP causes pain with walking, turning in bed, climbing stairs, or prolonged standing. It may be felt in the buttocks, hips, or front of the pelvis as well as the lower back.
• Muscle fatigue and deconditioning: The back muscles work harder to compensate for postural changes and ligamentous laxity, leading to fatigue.
• Existing back conditions: Pre-existing disc disease or musculoskeletal issues may be aggravated by the demands of pregnancy.

Is physical therapy safe during pregnancy?

Yes. Physical therapy for back and pelvic girdle pain during pregnancy is both safe and well-supported in clinical guidance. It does not put the pregnancy at risk when delivered by a clinician experienced in obstetric musculoskeletal care.

The American College of Obstetricians and Gynecologists endorses physical activity and exercise during uncomplicated pregnancy — Committee Opinion 804 affirms that pregnant women should be encouraged to initiate or continue safe physical activities 1Ref 1American College of Obstetricians and Gynecologists (2020).Physical Activity and Exercise During Pregnancy and the Postpartum Period: ACOG Committee Opinion, Number 804.ACOG endorses physical activity and exercise as safe and beneficial during uncomplicated pregnancy; pregnant women should be encouraged to initiate or continue safe physical activities including therapeutic exercise. Physical therapy is consistent with those recommendations. Exercises are adapted to pregnancy — positions like lying flat on the back may be modified after the first trimester, and high-impact or high-strain activities are avoided.

What does physical therapy for pregnancy back pain include?

A pelvic floor physical therapist or a PT with obstetric training will individualize treatment based on your specific type of pain and how far along you are. Treatment commonly includes:

Exercise: - Pelvic floor exercises (Kegels) to support the pelvic floor and reduce instability symptoms - Transverse abdominis activation (gentle 'drawing in' of the deep core) — a safer approach to core work than conventional crunches during pregnancy - Glute and hip strengthening to offload the lumbar spine and stabilize the pelvis - Cat-cow and pelvic tilts for lumbar mobility and pain relief - Water exercise / hydrotherapy — buoyancy reduces gravitational load on the spine and pelvis 2Ref 2Almousa S, Lamprianidou E, Kitsoulis G (2018).The effectiveness of stabilising exercises in pelvic girdle pain during pregnancy and after delivery: A systematic review.Systematic review of stabilizing exercises for pelvic girdle pain in pregnancy and postpartum; supports exercise-based PT as the primary conservative approach for pregnancy-related PGP

Manual therapy: - Soft tissue release and gentle joint mobilization (where appropriate) to reduce muscle tension and joint irritability

Education and ergonomics: - How to roll in and out of bed without straining the SI joints (log roll technique) - Standing, sitting, and lifting mechanics - Activity modifications for specific provocative movements

Supports: - Pelvic support belts (pregnancy support belts or SI belts) can offload the pelvis and reduce pain with walking in some people with PGP — a PT can advise whether these are appropriate and how to wear them correctly

Safe exercises to try at home

These exercises are generally considered safe during pregnancy for most people, but check with your OB or midwife if you have any complications:

• Pelvic tilts (standing or on hands and knees): Gently flatten the lower back by tightening the abdominals and tilting the pelvis. Hold 5–10 seconds, repeat 10–15 times.
• Cat-cow stretches: On hands and knees, alternate arching and rounding the back slowly. Promotes lumbar mobility and reduces muscle tightness.
• Side-lying clam: Lying on your side with knees bent, rotate the top knee upward without rolling the pelvis. Strengthens the hip abductors without loading the lumbar spine. 3 x 15 per side.
• Glute bridges: Lying on your back (modify with a wedge after the first trimester): push through the heels to lift the hips. Hold 2–3 seconds. 3 x 10–12.
• Walking: Moderate-paced walking on even surfaces is generally helpful — but for pelvic girdle pain, reduce stride length and avoid pushing through significant pain.

Avoid if you have PGP: wide-legged movements, asymmetric loading (standing on one leg prolonged), high-impact activity, or deep lunges that stress the SI joint.

What about medications and other pain relief?

Non-pharmacological approaches are the safest and most recommended first line for back pain in pregnancy 3Ref 3Qaseem A, Wilt TJ, McLean RM, Forciea MA (2017).Noninvasive Treatments for Acute, Subacute, and Chronic Low Back Pain: A Clinical Practice Guideline From the American College of Physicians.Non-pharmacological approaches are recommended as first-line treatment for low back pain; relevant to pregnancy context where pharmacological options are more restricted. Acetaminophen is generally considered the safest over-the-counter pain reliever in pregnancy; NSAIDs like ibuprofen are typically avoided in the second half of pregnancy. Discuss any medication use with your OB, midwife, or Gale clinician before taking it.

Heat (warm — not hot) applied to the lower back can help with muscle discomfort. Cold packs may help with acute flares. Neither is a substitute for the exercise and stability work that addresses the underlying cause.

Who should I see for pregnancy back pain?

A physical therapist specializing in pelvic health or obstetric musculoskeletal care is the right specialist. They can distinguish back pain from pelvic girdle pain, assess your specific muscle and joint impairments, and design a program that is safe at your gestational age.

Your OB or midwife can provide a referral and should be informed of your symptoms — particularly to rule out causes of back pain that are not musculoskeletal (such as kidney infection or preterm labor, which can present as back pain). Gale can help coordinate this referral and can provide a clinician visit to review your symptoms before referral.