Back pain relief while pregnant

Why pregnancy causes back and pelvic pain

Several things happen at once during pregnancy that make back and pelvic pain common. The hormone relaxin loosens the ligaments around the pelvis in preparation for birth, which can make the joints there feel less stable. As the bump grows, your centre of gravity shifts forward, which changes your posture and puts extra strain on the lower back. Weight gain and changes to your abdominal muscles add further load. None of this means something has gone wrong — it's an expected part of how the body adapts to pregnancy — but that doesn't mean you have to simply put up with the discomfort.

Pelvic girdle pain: a distinct condition worth naming

Pelvic girdle pain, sometimes still referred to by its older name symphysis pubis dysfunction, is pain felt around the pelvic joints — at the front over the pubic bone, at the back near the dimples above the buttocks, or both. It can make walking, climbing stairs, turning over in bed or getting in and out of the car noticeably painful. It's more specific than general pregnancy back ache, and it's important to mention it by name to your midwife or GP, since it usually responds well to physiotherapy and often needs a slightly different approach to exercise than ordinary back pain.

Sleeping positions and pillows that help

Many women find that back and pelvic pain is at its worst first thing in the morning, simply because lying down for hours in an unsupportive position lets ligaments and joints settle awkwardly overnight. From around the middle of pregnancy, sleeping on your side (ideally your left side, as commonly advised in later pregnancy) rather than on your back tends to be more comfortable and is the position generally recommended.

• A pillow between the knees keeps the hips and pelvis better aligned overnight
• A pillow or rolled towel under the bump can take some of the pull on the lower back
• A full-length pregnancy or body pillow does the job of several separate pillows and is easier to keep in place while you move
• Getting in and out of bed by rolling onto your side first, then pushing up with your arms, avoids straining the abdominal and back muscles directly

Safe stretches and gentle movement

Gentle movement is generally encouraged throughout an uncomplicated pregnancy, and it often eases rather than worsens back pain. Always check with your midwife or GP first if you're unsure whether a particular activity is suitable for you.

• Pelvic tilts, done standing against a wall or on hands and knees, gently mobilise the lower back
• Cat–cow on hands and knees, moved slowly and within a comfortable range, is a common favourite among pregnant women
• Gentle walking, at a pace that feels comfortable, keeps the back and hips moving without high impact
• Swimming is often well tolerated because the water supports the weight of the bump
• Antenatal yoga or pregnancy-specific exercise classes are taught with these changes in mind, which is safer than adapting a general class yourself

Avoid lying flat on your back for exercises for extended periods from the second trimester onwards, and stop any stretch that causes pain rather than a mild, comfortable stretch sensation.

Maternity support belts

A maternity support belt or pelvic support belt is worn around the hips or lower bump to help take some of the weight and provide a sense of stability, particularly for pelvic girdle pain. Many women find them helpful for specific activities such as a longer walk or a day on their feet, though they work best as one part of a wider approach that includes movement and, where appropriate, physiotherapy exercises, rather than being worn constantly as a substitute for strengthening the muscles around the pelvis. A physiotherapist or midwife can advise on the right type and fit for you.

When to speak to your midwife or GP

It's always reasonable to mention back or pelvic pain at a routine antenatal appointment, but some situations are worth raising sooner rather than waiting.

• Pain that's affecting your ability to walk, work or sleep
• Pain specifically around the pubic bone or that makes your legs feel like they might give way
• Pain that's new, sudden or severe rather than a gradual ache
• Any pain accompanied by vaginal bleeding, contractions, or reduced movement from the baby — these need urgent attention, not a routine appointment

Your midwife can refer you for NHS physiotherapy for pregnancy-related back or pelvic pain, and many areas have physiotherapists who specialise specifically in antenatal care. This referral route is well established and worth asking about directly if pain is becoming a regular problem, rather than waiting to see if it settles on its own.

What to avoid during pregnancy

If you're looking for general information on managing everyday back pain once you're no longer pregnant or breastfeeding, our general back pain relief guide covers wellness options that aren't suitable to use right now but may be worth revisiting afterwards, and always check with your GP first if you've recently given birth.