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Symptom guide

Pelvic pain: causes, red flags and when to seek urgent help

Pelvic pain is pain in the lower tummy and the area between the tummy and thighs. It has many possible sources, including the womb, ovaries, bladder, bowel and muscles, and it ranges from period cramps to sudden pain that needs emergency care. This guide sets out the common gynaecological and non-gynaecological causes, the features that call for 999 or same-day help, particularly if pregnancy is possible, and the way pelvic pain is assessed.

Last checked: 2026-10-03

Key facts

At a glance.

  • Period pain is common

    The NHS says period pain happens when the womb tightens during a period, usually lasts up to 3 days, and is often a normal part of the menstrual cycle.

  • Conditions behind it

    Endometriosis, fibroids, pelvic inflammatory disease and ovarian cysts are among the gynaecological causes the NHS describes.

  • Pregnancy first

    If pregnancy is possible, one-sided lower tummy pain with bleeding or shoulder-tip pain needs urgent advice, because of ectopic pregnancy.

  • Severe means urgent

    The NHS says to ask for an urgent GP appointment or contact NHS 111 if pelvic pain or period pain is severe or worse than usual and painkillers have not helped.

  • Emergency signs

    Sudden, sharp, intense pain, fainting, a very high temperature or heavy bleeding with pelvic pain need 999 or A&E.

Where pelvic pain comes from

The pelvis contains the womb, fallopian tubes and ovaries in women, the prostate and seminal vesicles in men, the bladder and the lower bowel, all surrounded by muscles, ligaments and nerves. Pain from any of these can feel similar, which is why clinicians pay close attention to timing, relationship to periods, sex, passing urine and opening the bowels, and to any bleeding or discharge.

This page concentrates on pain felt low in the tummy and pelvis in people with a womb, which is the commonest presentation, while recognising that urinary, bowel and musculoskeletal conditions can cause the same discomfort in anyone. Pain in the testicle has its own guide.

Common causes and how they differ

Pelvic pain: causes drawn from NHS descriptions
CauseTypical featuresClues
Period painTummy pain at the start of or just before a period, cramps spreading to back and thighs, up to 3 daysLinked to menstrual cycle; an IUD can cause period pain, particularly in the first 3 to 6 months
EndometriosisSevere period pain, heavy periods, lower tummy and back pain, pain on pooing or peeing, pain during or after sex, extreme tiredness, difficulty getting pregnantOften takes a long time to diagnose; can overlap with IBS, fibroids and PID
Pelvic inflammatory diseasePelvic or lower tummy pain, pain deep inside during sex, unusual heavy periods, bleeding between periods or after sex, unusual dischargeUsually caused by sexually transmitted infections such as chlamydia and gonorrhoea, or other vaginal bacteria
Ovarian cystOften no symptoms; if it ruptures, is large or twists: pelvic pain from dull to sudden and sharp, pain during sex, bloating, feeling full quicklyMost are harmless and go within a few months; sudden severe pain needs urgent review
FibroidsHeavy or painful periods, pelvic pressureFound by examination or ultrasound
Ectopic pregnancyMissed period, tummy pain low down on one side, vaginal bleeding or brown watery discharge, shoulder-tip painTypically between the 4th and 12th week of pregnancy; emergency if sudden and severe
Bowel and bladder causesIrritable bowel syndrome, constipation, urinary infection, interstitial cystitisPain relates to bowel movements or passing urine

Pelvic pain when pregnancy is possible

The NHS says an ectopic pregnancy is when a fertilised egg implants outside the womb, usually in a fallopian tube, and that it cannot be saved and usually has to be removed using medicine or an operation. The symptoms tend to develop between the 4th and 12th week and can include a missed period and other signs of pregnancy, tummy pain low down on one side, vaginal bleeding or a brown watery discharge, pain in the tip of the shoulder and discomfort when peeing or pooing. It advises contacting your GP or NHS 111 if you have a combination of these symptoms and might be pregnant, even without a positive test.

Call 999 or go to A&E immediately, the NHS says, for a combination of sharp, sudden and intense tummy pain, feeling very dizzy or fainting, feeling sick and looking very pale, because a fallopian tube may have ruptured. A rupture can be life threatening but is treatable if dealt with quickly.

Red flags and urgency levels

  • Call 999 or go to A&E if you think you have pelvic inflammatory disease symptoms and pain between the tummy and thighs is severe, getting worse, or hurts when you move or touch the area.

  • Call 999 or go to A&E for pelvic pain with heavy vaginal bleeding, a sharp sudden intense pain in the lower tummy, pain under the right ribs and in the right shoulder, feeling dizzy or faint, a very high temperature or feeling hot, cold or shivery, or being sick and very unwell, as the NHS PID page advises.

  • Call 999 or go to A&E for sudden sharp intense pain with fainting, sickness and paleness, which may indicate a ruptured ectopic pregnancy.

  • Ask for an urgent GP appointment or contact NHS 111 for sudden severe pelvic pain, or pain in the tummy with nausea or vomiting; the NHS says this for ovarian cysts, since a cyst can split or twist.

  • Ask for an urgent GP appointment or contact NHS 111 if period or pelvic pain is severe or worse than usual and painkillers have not helped, or if pelvic pain keeps coming and going and PID is possible.

  • See a GP if periods become more painful, heavier or irregular, pain interferes with daily life, you have pain during sex or when peeing or pooing, bleeding between periods, a swollen tummy, loss of appetite or unexplained weight loss, as the NHS period pain page lists.

  • Tell the clinician at once if you could be pregnant, are using an IUD or have a new partner and unusual discharge.

What the doctor asks and examines

Expect questions about the pain pattern (constant, cyclical, with sex, with periods or bowel movements), your cycle and last period, contraception including any coil, pregnancy possibility, discharge, bleeding, urinary and bowel symptoms, sexual partners, previous infections or surgery, and family history of endometriosis. The NHS says a GP may ask about recent sexual partners, the contraception you use and whether you could be pregnant.

The examination includes the tummy and pelvis, and often a vaginal examination with a speculum and swabs for infection. You can ask for a female doctor and for a chaperone, and you are in control of the examination and can ask the doctor or nurse to stop at any time, as the NHS PID page states.

Tests that may be used

A pregnancy test is almost always the first test in someone who could be pregnant. The NHS lists blood tests, a pregnancy test, an ultrasound scan and referral to a sexual health clinic for suspected PID. Ultrasound, which may be done on the tummy or inside the vagina, is the usual imaging test for cysts, fibroids and endometriosis, and the NHS says an MRI scan or a laparoscopy, in which a camera is passed through a small cut in the tummy, can confirm endometriosis and sometimes allow it to be treated at the same time.

For an ovarian cyst the NHS says a probe-based ultrasound is usual, with a repeat scan in a few weeks or gynaecology referral if a cyst is found; blood tests for cancer-related chemicals are done if there is concern, and high levels do not necessarily mean cancer because endometriosis, a pelvic infection, fibroids and periods can raise them too.

Treatment and self-care

For period pain the NHS suggests a warm bath or shower, a heat pad or hot water bottle wrapped in a tea towel, massage, gentle exercise such as yoga, swimming, walking or cycling, and painkillers such as paracetamol or ibuprofen. A GP may recommend stronger anti-inflammatory medicines, a TENS machine, or contraception that thins the womb lining. Antibiotics are the usual treatment for PID, and the NHS says that if diagnosed early it can be easily treated.

Endometriosis cannot be cured, but the NHS says treatment can manage symptoms, starting with painkillers and hormones and progressing to surgery if other treatments do not work. Ovarian cysts often disappear within a few months, with surgery reserved for large, symptomatic or potentially cancerous cysts. Persistent pelvic pain with no clear cause often benefits from a multidisciplinary approach including pelvic physiotherapy and pain management.

Frequently asked

Questions people ask.

Quick, plain-English answers to the questions we hear most.

  • When is pelvic pain an emergency?

    When it is sudden, sharp and intense, comes with fainting, sickness, paleness, heavy bleeding or a very high temperature, or is severe and getting worse. The NHS advises 999 or A&E for these signs and says not to drive yourself.

  • Could my pain be an ectopic pregnancy?

    If you could be pregnant, one-sided lower tummy pain with a missed period, bleeding or brown discharge, or shoulder-tip pain needs urgent advice from your GP or NHS 111, even without a positive test, according to the NHS.

  • How long does period pain normally last?

    The NHS says period pain usually lasts for up to 3 days. See a GP if periods become more painful, heavier or irregular, or if pain stops you doing your usual daily activities.

  • What is the difference between endometriosis and period pain?

    Period pain is usually limited to the days around a period. The NHS says endometriosis can cause severe period pain that stops normal activities, heavy periods, pain at other times, pain on pooing or peeing, pain during sex and extreme tiredness.

  • Can an ovarian cyst cause sudden pain?

    Yes, if it ruptures or twists. The NHS lists sudden severe pelvic pain, or tummy pain with nausea or vomiting, as reasons for an urgent GP appointment or NHS 111 contact.

  • What causes pelvic inflammatory disease?

    The NHS says it is usually caused by sexually transmitted infections such as chlamydia and gonorrhoea, but can also be caused by common bacteria that live in the vagina. It can often be treated with antibiotics.

  • Can a coil cause pelvic pain?

    Yes. The NHS says an intrauterine device can cause period pain, particularly in the first 3 to 6 months after it is put in. Severe or worsening pain should be checked.

  • Will I need a laparoscopy?

    Not usually as a first step. Ultrasound and examination come first. The NHS says a laparoscopy can confirm endometriosis and sometimes allows areas of endometriosis to be removed during the same procedure.

  • Can bowel or bladder problems cause pelvic pain?

    Yes. Irritable bowel syndrome, constipation and bladder conditions often cause lower tummy and pelvic pain. The NHS lists pelvic pain among IBS symptoms and notes that endometriosis can mimic IBS.

Where this comes from

Sources and checking.

This guide is for information, not medical advice.

Your GP or consultant knows your history and can tell you which parts apply to you. If your symptoms are severe, rapidly worsening, or come with red-flag features, seek urgent medical care. Figures and availability change, so treat them as a guide and confirm with the provider.

Published 2026-10-03, next review 2027-10-03.