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Three months after her second baby, she couldn’t carry the laundry basket up the stairs without pain shooting across her lower back and into her hip. She’d mentioned it at her six-week visit, been told it was normal and to “take it easy.” Four more weeks later she was still struggling, still told to rest, still not improving.
What she had — pelvic girdle pain — responds specifically to targeted exercise and physiotherapy. Rest alone doesn’t fix it. Knowing that earlier would have saved her months of unnecessary limitation.
Back pain after birth is one of the most prevalent and most undertreated postpartum conditions. It’s often dismissed as an expected side effect of pregnancy that will eventually resolve. For many women it does. For a significant number, it doesn’t — without the right intervention.
How Common Is It Really?
The numbers are striking. 33.6% of pregnant women have pelvic girdle pain, and 18.9% of postpartum women have “serious” pelvic girdle pain.
Research published in Annals of Medicine (2025) found that most exercise programmes are safe and significantly reduce pregnancy-related and postpartum pelvic girdle pain with moderate to high effect sizes — yet many women either don’t receive appropriate referral or don’t pursue physiotherapy because they assume back pain is just part of recovery.
In February 2026, the American Physical Therapy Association (APTA) released new Clinical Practice Guidelines for Pelvic Girdle Pain in the Postpartum Population — the most comprehensive evidence-based framework to date for screening, diagnosis, and treatment. The existence of these specific guidelines for postpartum women is itself significant: this is a condition the profession has recognized demands its own dedicated approach.
Four Types of Postpartum Back Pain — and Why They Matter Differently
Not all postpartum back pain has the same cause, the same location, or the same treatment path. Identifying which type you have changes everything about how to address it.
1. Pelvic Girdle Pain (PGP)
The most common and most frequently mismanaged type. Pelvic girdle pain is a musculoskeletal condition characterized by pain arising from one or more joints of the pelvic girdle, most commonly the pubic symphysis and sacroiliac joints. It is frequently associated with pregnancy and the postpartum period, and may range from mild discomfort to severe functional limitation. PGP can cause pain, instability, and reduced mobility, particularly during weight-bearing activities.
Where it hurts: The band across the lower back, one or both sides of the posterior pelvis, the hips, the groin, or radiating into the thighs. Often described as a deep ache or sharp pain with specific movements — getting up from sitting, standing on one leg, climbing stairs, or turning over in bed.
What makes it worse: Asymmetrical loading — anything where you put more weight through one leg than the other, like walking on uneven ground, climbing stairs, carrying a baby on one hip.
The postpartum connection: Relaxin — the hormone that loosened your ligaments during pregnancy — remains in your system during breastfeeding. In some females, the sacroiliac joint pain that developed during pregnancy lingers on postpartum because the ligament laxity that contributed to it hasn’t fully resolved.
2. Lumbar Back Pain (Mechanical Lower Back Pain)
Different from pelvic girdle pain — located higher in the spine, characterized by pain that radiates down one leg (suggesting disc involvement) or stays centrally in the lumbar vertebrae. Postural changes during pregnancy place significant sustained load on the lumbar spine, and carrying a baby creates ongoing mechanical demand.
Where it hurts: The lower lumbar spine, sometimes radiating to the leg (sciatica pattern).
What makes it worse: Sustained bending, prolonged sitting, lifting with a rounded back.
3. Tailbone Pain (Coccydynia)
A difficult vaginal delivery, instrumental birth, or a large baby can injure the coccyx (tailbone). This condition causes severe pain at the base of the spine — particularly when sitting, transitioning from sitting to standing, or during bowel movements.
Coccydynia after birth is often not recognized for what it is. Many women assume the pain is perineal and related to stitches. Tailbone pain sits slightly higher and has a specific focal quality at the very base of the spine.
It typically resolves within a few months but can persist significantly longer. A physiotherapist or osteopath can assess and treat persistent coccydynia with internal or external manual therapy.
4. Epidural-Related Back Pain
Some women develop localized back pain at the site of their epidural insertion. This is usually superficial, mild, and resolves within a few weeks. Persistent pain at the epidural site beyond six weeks is uncommon and worth raising with your OB or anesthesiologist.
The Diagnostic Distinction: How to Tell PGP From Lumbar Back Pain
Getting this right guides treatment. These two types are frequently confused.
| Feature | Pelvic Girdle Pain | Lumbar Back Pain |
|---|---|---|
| Primary location | Posterior pelvis, sacroiliac joints, groin | Lumbar spine, may radiate to leg |
| Worsened by | Single-leg weight-bearing, asymmetrical movement | Forward bending, prolonged sitting |
| Side-lying position | Often painful, especially with knees unsupported | Usually more comfortable |
| Stairs | Typically aggravates | Variable |
| Specific pain test | Positive posterior pelvic pain provocation (P4) test | Negative P4 test |
A physiotherapist can perform the P4 test (also called the posterior pelvic pain provocation test) — a simple, reliable clinical test that distinguishes PGP from lumbar pain. This takes two minutes and significantly changes what treatment you should be doing.
What Helps — and What Doesn’t
Movement Is Medicine (With Specific Caveats)
The instinct to rest postpartum back pain is understandable but often counterproductive. Pain-guided exercise programmes are guideline-based treatments for postpartum pelvic girdle pain, with moderate to high effect sizes in reducing pain.
The key phrase is “pain-guided.” Not “push through the pain” — that’s different. It means using pain as your feedback mechanism: movement that causes no pain or mild, temporary discomfort is generally safe to continue. Movement that causes sharp pain during or after should be modified or avoided until your system is stronger.
Providing pain education to women with postpartum pelvic girdle pain — helping them understand their symptoms — is a key component of effective treatment. Fear of movement is itself a contributor to persistent pain. Understanding what’s happening and why specific movements aggravate it reduces fear-avoidance behavior that can actually prolong the condition.
For Pelvic Girdle Pain Specifically
What consistently helps:
Load management — Reduce asymmetrical activities temporarily. Carry the baby in the center of your body rather than on one hip. Use both sides of the body symmetrically when you can. Avoid standing on one leg longer than necessary.
Pelvic stabilization exercises — Specific exercises targeting the muscles that support the sacroiliac joint. Not generic back exercises, not yoga without guidance — specifically pelvic stabilization work guided by a physiotherapist. Postpartum women with pelvic girdle pain who receive specific pelvic stabilization exercise training show better improvements in muscle function, physical function, pain, and disability.
A support belt or SI belt — Worn around the pelvis (not the lower back like a maternity belt), can provide symptom relief by compressing the sacroiliac joint and reducing micro-movement that aggravates pain. Used as a short-term management tool, not a long-term solution.
Sleep positioning — Place a pillow between your knees when sleeping on your side. This keeps the pelvis in neutral alignment and significantly reduces overnight pain.
What to avoid initially:
- High-impact exercise before adequate stability is restored
- Asymmetrical exercises (single-leg work, lunges) until PGP has resolved
- Exercises that involve one leg unsupported for prolonged periods
- High-load activities like running before pelvic stability is assessed
For Lumbar Back Pain Specifically
Core stability work — particularly the foundational reconnection work described in our diastasis recti guide — directly addresses the loss of lumbar support that occurs during pregnancy. Cat-cow movements, gentle lumbar rotation, and progressive loading under guidance from a physiotherapist.
Ergonomics matter enormously in new parenthood. Most new parents spend significant time in positions that load the lumbar spine: bent over a changing table, leaning over a bassinet, sitting slouched while nursing. Adjusting the height of changing surfaces, using a nursing pillow that brings the baby up to breast height, and being conscious of seated posture during feeds can meaningfully reduce lumbar load.
When to See a Physiotherapist — APTA 2026 Guidance
The American Physical Therapy Association’s new Clinical Practice Guidelines for postpartum pelvic girdle pain (February 2026) provide specific evidence-based recommendations for when and how physical therapy should be applied.
Seek physiotherapy assessment promptly if:
- Back or pelvic pain is limiting your ability to walk, carry your baby, or perform daily tasks
- Pain has not improved meaningfully by six weeks postpartum
- Pain worsens after initially improving
- You had significant pelvic girdle pain during pregnancy that is continuing postpartum
- You experience pain radiating down one leg — this may indicate disc involvement needing specific assessment
- You have bladder or bowel symptoms alongside back pain — possible nerve involvement
A physiotherapy assessment typically includes:
- Classification of your specific pain type (PGP vs. lumbar vs. mixed)
- Functional movement screening
- Specific clinical tests (P4 test, active straight leg raise)
- Pelvic floor screening — back pain and pelvic floor dysfunction frequently co-occur
- A personalized, progressive exercise program built around your specific presentation
Finding a physiotherapist with pelvic health or women’s health specialization produces better outcomes than general physiotherapy for postpartum musculoskeletal conditions. Use the APTA Find a PT tool and filter for pelvic health.
The Pelvic Floor Connection
Back pain and pelvic floor dysfunction share a mechanistic relationship that most general practitioners don’t address together — but pelvic health physiotherapists do.
The pelvic floor, deep abdominals, diaphragm, and lumbar multifidus function as one integrated pressure management system. When any component is disrupted — which postpartum almost always involves the pelvic floor and often the abdominals as well — the other components compensate. Lumbar muscles can overwork when the deep core isn’t stabilizing adequately. This is why some postpartum back pain doesn’t respond to standard physiotherapy but significantly improves when pelvic floor rehabilitation is added.
If you’ve been seeing a physio for back pain without improvement, and haven’t had a pelvic floor assessment, ask specifically whether an internal pelvic examination would be appropriate. Our pelvic floor recovery guide explains what pelvic floor physio involves and how to find a qualified specialist.
Pain Neuroscience: Why “Understanding Your Pain” Is Part of Treatment
Modern pain neuroscience is an integrative approach that addresses both the biomedical and psychosocial components of pain. By explaining pain and reducing its perceived threat, this approach aims to change pain beliefs and alleviate fears, particularly regarding specific movements or movement patterns.
This matters practically. Fear of movement — the belief that moving will make things worse — is one of the strongest predictors of chronic pain. Women who understand that controlled, pain-guided movement is safe and beneficial recover faster than those who avoid movement out of fear.
If your physiotherapist or OB spends time explaining what’s happening in your body and why specific activities are or aren’t safe, that’s not padding the appointment — it’s evidence-based practice.
Warning Signs That Require Urgent Evaluation
Most postpartum back pain is musculoskeletal and responds to physiotherapy. Some symptoms indicate conditions that need more urgent assessment.
Contact your doctor promptly if you have back pain alongside:
- Fever — possible infection (vertebral, pelvic, or renal)
- Loss of bladder or bowel control — possible nerve compression
- Numbness or weakness spreading down your legs
- Pain that is constant, progressive, and unrelated to movement or position
- Severe pain at the epidural site that isn’t improving
Seek immediate care if:
- You have sudden loss of bladder or bowel control with back pain — possible cauda equina syndrome, a rare but serious emergency
Myth vs. Fact
Myth: Back pain after birth always resolves on its own with rest. Fact: While some cases do resolve spontaneously, pelvic girdle pain in particular responds significantly better to targeted physiotherapy than to rest alone. Waiting for it to resolve without intervention often leads to months of unnecessary limitation.
Myth: If you had a C-section, you won’t have pelvic girdle pain. Fact: Pelvic girdle pain is primarily driven by relaxin-related ligament laxity during pregnancy — which affects all pregnant women regardless of birth type. C-section mothers can and do develop PGP.
Myth: Yoga is good for all postpartum back pain. Fact: Some yoga poses are helpful; others involve asymmetrical weight-bearing or single-leg positions that can aggravate pelvic girdle pain significantly. Physiotherapy-guided movement is more appropriate than general yoga for active PGP.
Myth: An epidural caused my back pain. Fact: Research consistently shows no causal link between epidural use and long-term postpartum back pain. The back pain that persists after an epidural is attributable to the same postural and ligamentous changes that affect all postpartum women.
Frequently Asked Questions
It depends on type and whether appropriate intervention is sought. Mild postpartum back pain often resolves within 3–6 months. Pelvic girdle pain without physiotherapy can persist for 12 months or more in a significant proportion of women. With appropriate treatment, most women see meaningful improvement within 8–12 weeks.
Pain-guided exercise is generally both safe and beneficial — but “exercise” needs to be appropriate for your specific pain type. High-impact exercise, heavy asymmetrical loading, and intense core exercises are not appropriate acutely. Walking, specific stabilization exercises, and swimming (once lochia has resolved) are typically appropriate starting points. See a physiotherapist for guidance specific to your presentation.
Yes. Postpartum back pain can emerge or worsen months after delivery — particularly as you become more physically active, return to work, or as breastfeeding keeps relaxin levels somewhat elevated. Late-onset postpartum back pain is common and treated similarly.
Some women find chiropractic care helpful for postpartum back pain, particularly for lumbar complaints. The evidence base for chiropractic care in pelvic girdle pain is weaker than for physiotherapy. If you choose chiropractic, ensure the practitioner has specific experience with postpartum patients.
Not necessarily — many women’s pain resolves with delivery as the mechanical load of the pregnancy lifts. However, women with significant pregnancy-related back or pelvic pain are at higher risk for persistent postpartum pain and should be proactively referred to physiotherapy rather than waiting to see if it resolves.
Sources
- American Physical Therapy Association (APTA) — Clinical Practice Guidelines for Pelvic Girdle Pain in the Postpartum Population, February 2026
- Zitti M et al. — “Motor Control Exercises for Pelvic Girdle Pain: A Narrative Review,” Healthcare (2025) — PMC Full Text
- Storari L et al. — “Educating Women to Prevent and Treat Low Back and Pelvic Girdle Pain During and After Pregnancy,” Annals of Medicine (2025) — PMC Full Text
- Brigham and Women’s Hospital Department of Rehabilitation Services — Pelvic Girdle Pain Clinical Guidance
- Pain Treatment MD — Postpartum Back Pain: Causes, Relief & Recovery Tips, March 2026
- Medbridge — How to Manage Postpartum Pelvic Girdle Pain, November 2025
All information reflects evidence available as of 2026.
