Tailbone Pain in Pregnancy: A Complete Guide

Tailbone pain is one of the more awkward and uncomfortable pregnancy symptoms, and it tends to sneak up on women as the pregnancy progresses. The tailbone -- the small triangular bone at the base of the spine -- comes under increasing strain in pregnancy, and for some women the ache becomes a daily frustration that makes sitting, standing and turning over in bed genuinely difficult. This complete UK guide explains what causes tailbone pain in pregnancy, what is normal, how to ease the discomfort, and when it is worth speaking to your midwife about it.

Why the Tailbone Hurts in Pregnancy

The tailbone, or coccyx, sits at the very bottom of the spine and takes a lot of the weight when you sit. In pregnancy, the hormone relaxin loosens the ligaments around the pelvis and coccyx in preparation for birth, which makes the tailbone more mobile and more prone to aching. As your bump grows and your centre of gravity shifts forward, many women lean back to compensate, which tilts the pelvis and increases pressure on the tailbone.

The growing uterus also presses on the muscles and nerves of the pelvic floor, which refer pain down into the coccyx. Constipation, very common in pregnancy thanks to progesterone slowing the digestive tract, adds pressure in the rectum that makes tailbone pain worse. A previous injury to the tailbone, even years earlier, can flare up again under the strain of pregnancy.

When Tailbone Pain Needs Checking

Most pregnancy-related tailbone pain is dull, aching and worse when sitting on hard surfaces or standing up from a chair. However, it is worth telling your midwife if the pain is severe enough to stop you sitting or sleeping, if it is getting steadily worse, or if it is accompanied by numbness or tingling in your buttocks or down your legs.

Sharp, shooting pain in the coccyx together with a fever, or pain when opening your bowels, should be reported the same day. Tailbone pain alongside any bleeding, regular waves of pain, or a sudden change in the baby movements later in pregnancy also needs prompt assessment.

Practical Ways to Ease Tailbone Pain

There is a lot you can do to make tailbone pain more manageable. Use a specially shaped cushion -- a doughnut or wedge cushion with a cut-out at the back -- to take the pressure off the coccyx when you sit. Avoid sitting on hard surfaces for long periods, and shift your weight from one buttock to the other when you have to sit.

A warm (not hot) compress or wrapped hot water bottle placed against the base of your spine for short spells eases muscle tension around the tailbone. Gentle pelvic floor exercises and pregnancy yoga stretches help support the pelvis, and staying active prevents the stiffness that makes coccyx pain worse. Tackling constipation with plenty of water and fibre reduces pressure in the rectum. Paracetamol is generally considered the safest pain relief in pregnancy, but confirm with your midwife or pharmacist first.

When to Contact Your Midwife

Mild tailbone ache that you can manage with a cushion and stretches is usually fine to mention at your next routine appointment. However, contact your midwife if the pain is severe, if it is preventing you from sitting, sleeping or moving normally, or if it comes with numbness, tingling, fever or bowel symptoms.

Your midwife may refer you to a physiotherapist who specialises in pregnancy and pelvic health, which is a service available on the NHS in many areas. A physio can assess the position and movement of your coccyx and pelvis and give you tailored exercises and advice that genuinely help.

Frequently Asked Questions

Is tailbone pain normal in pregnancy?

Yes. Hormonal changes, postural shifts and the growing uterus all put strain on the coccyx, making tailbone pain very common in pregnancy. Mild aching is usually nothing to worry about.

What is the best cushion for tailbone pain in pregnancy?

A doughnut-shaped or wedge cushion with a cut-out at the back takes pressure off the coccyx when you sit. Using one at work, in the car and at home can make a real difference.

Can a physiotherapist help with tailbone pain in pregnancy?

Yes. A pregnancy physiotherapist can assess your coccyx and pelvis and provide tailored exercises, manual therapy and practical advice. Ask your midwife for an NHS referral.

This information is for general guidance only and is not a substitute for professional medical advice. If you are worried about any symptom in pregnancy, always contact your midwife, GP or NHS 111.