Postpartum Back Pain: Causes & Relief for New Moms

If your back has been aching since your baby arrived, you are far from alone. Back pain after delivery is one of the most common complaints new mothers have, and the good news is that for most women it eases off on its own over time. Here is what is causing it and what you can safely do to feel better.

Quick Answer

Postpartum back pain is very common and usually improves over a few weeks to a few months. It mostly comes from the changes pregnancy made to your posture, the hormone relaxin having loosened your joints and ligaments, weakened core muscles (sometimes with abdominal separation), and the physical effort of labour. On top of that, the everyday work of new motherhood — hunching while feeding, bending over the cot, and lifting the baby and car seat — keeps straining your back. The main fixes are improving your feeding and lifting posture and gently rebuilding core and pelvic-floor strength once your doctor clears you. Some symptoms, though, mean you should see a doctor without delay (see the red flags below).

Why back pain happens after delivery

Several things stack up at once after childbirth:

• Pregnancy posture and relaxin. Through pregnancy your growing bump pulled your posture forward and your lower back curved more to balance the weight. The hormone relaxin also loosened your joints and ligaments to prepare for birth. These changes do not reverse overnight — it takes time for your joints, ligaments and posture to recover, and your back feels the strain in the meantime.
• Weakened core and abdominal separation. Months of stretching leave the abdominal and core muscles weak, so your back muscles do more of the work of holding you upright. In some women the two halves of the tummy muscle stay separated (diastasis recti), which further reduces core support.
• The effort of labour. Labour and pushing are intense physical work for your back, hips and pelvis, and that effort can leave aches that linger afterwards.
• New-mum postures. Then comes the constant bending, lifting and carrying — hunching down to breastfeed, leaning over the cot, hauling the baby and the car seat, and carrying a steadily heavier baby on one hip.

Feeding & lifting — the everyday culprits

These two activities happen many times a day, so even small posture mistakes add up.

Feeding posture. It is tempting to lean down to your baby, but that hunched position is hard on your neck and lower back. Instead, sit back in a supported chair, and bring the baby up to the breast rather than bending down to the baby. Use pillows under the baby (and under your arm or behind your back) so your shoulders can relax. Keep your feet flat on the floor or a low stool. Whether you are breastfeeding or bottle-feeding, the same rule applies — support the baby up to you.

Lifting. You lift your baby dozens of times a day, often from low cots and car seats. Bend at your knees rather than your waist, keep the baby close to your body, and avoid twisting as you lift or turn. When lifting a car seat, get close to it, keep your back straight, and use your legs. Try not to carry the baby always on the same hip.

Safe relief & rebuilding strength

Most postpartum back pain settles with gentle, consistent care:

• Mind your posture through the day, not just while feeding — stand tall, and avoid long stretches slumped on the sofa.
• Gentle postnatal exercise. Rebuilding core and pelvic-floor strength is the real fix, but timing matters. Wait until your doctor or your six-week check clears you before progressing, and start gently. Do not rush into hard abdominal workouts (crunches, planks), especially if you have diastasis recti or have had a caesarean — these can do more harm than good early on.
• A warm compress on the sore area can ease muscle tension.
• Short walks and gentle movement keep you from stiffening up; build up slowly.
• Rest, and do not carry too much too soon. Your body is healing, so ask for help with heavier tasks in the early weeks.
• Supportive footwear gives your back a more stable base than flat, unsupportive slippers.
• Watch floor-level tasks common in Indian homes — sitting cross-legged or squatting to feed, and bending to floor-level bedding or the cot add load to your lower back. Bend at the knees and use back support where you can.

If your back pain is not improving, or if you have ongoing abdominal separation or pelvic-girdle pain (around the front of the pelvis, hips or tailbone), a physiotherapist who works with postnatal women can give you a safe, tailored programme.

What about C-section / epidural

Many mothers worry that a caesarean or an epidural caused their back pain. Usually neither is a lasting cause. After a C-section your back may ache partly because your core is recovering and you are guarding the wound, but the surgery itself does not typically leave long-term back pain. An epidural can leave a day or two of tenderness at the injection site, but it is not a usual cause of ongoing back pain. So even if you had either, the causes and the relief steps above still apply to you. (One exception to watch for is in the red flags below.)

RED FLAGS — see a doctor

Most postpartum back pain is muscular and improves. But contact a doctor promptly, or seek emergency care, if you have:

• Severe or worsening pain, or pain that is getting worse rather than better.
• Pain with a fever.
• Weakness, numbness or tingling in your legs.
• Loss of bladder or bowel control, or numbness around your groin, buttocks or inner thighs. Any of these is a medical emergency — it can signal serious nerve compression (cauda equina) and needs immediate hospital care.
• A severe headache along with the back pain after an epidural or spinal, especially a headache that worsens when you sit or stand up.
• Pain that is not improving after several weeks.

When to see your doctor / physio

Book a routine appointment if your pain is dragging on past a few weeks, is interfering with daily life or sleep, or you notice a persistent gap or doming in your tummy muscles when you sit up. A doctor can rule out other causes, and a postnatal physiotherapist can help with stubborn diastasis recti or pelvic-girdle pain. And of course, act immediately on any of the red flags above. This is general guidance — your own doctor knows your delivery and history best.

Frequently Asked Questions

Q: How long does postpartum back pain last?

A: For most women it improves over a few weeks to a few months as posture, joints and core strength recover. If it is not easing after several weeks, see your doctor.

Q: Is back pain after a C-section normal?

A: Some aching is common as your core recovers and you protect the wound, but the surgery itself does not usually cause lasting back pain. The same posture, lifting and gentle-exercise steps help.

Q: Can breastfeeding cause back pain?

A: Feeding itself does not, but hunching over your baby to feed does. Sit supported and bring the baby up to you with pillows rather than leaning down.

Q: When can I start exercising to fix my back?

A: Start gentle movement and walking early, but wait for your doctor or six-week check before progressing to core work — and go slowly, especially with diastasis recti or after a caesarean.

Q: Should I worry about numbness or leg weakness?

A: Yes. Leg weakness or numbness, and especially any loss of bladder or bowel control or numbness around the groin, needs urgent medical attention.

Recovering with a newborn is hard to do alone. If you would like support and answers from other new mums and our team, join here.

This article is for general information and is not a substitute for personalised medical advice. Always consult your doctor about your own recovery.