Heavy or painful periods: fibroids, adenomyosis or endometriosis?

When periods disrupt your life

Planning every journey around a toilet, waking to change a pad or missing work because of cramps deserves attention. You do not have to measure an exact amount of blood before asking for help. Describe how your periods affect your sleep, energy and daily activities.

Fibroids, adenomyosis and endometriosis can cause overlapping symptoms. Their names describe different changes in the body, and more than one can be present. The aim of an assessment is to understand what explains your symptoms and choose care around your priorities.

What is the difference between the three conditions?

Fibroids: growths from the muscle of the womb

Fibroids are non-cancerous growths arising from the uterine muscle. They may grow towards the inner cavity, within the wall or towards the outside. Some cause no trouble. Others cause bleeding or pressure, depending on their position as well as their size. A fibroid found on a scan may be only part of the explanation.

Adenomyosis: lining-type tissue within the muscle

In adenomyosis, tissue like the inner lining is present within the muscular wall. The womb can become bulky and tender. Heavy bleeding and painful periods are common reasons for assessment, although some people have few symptoms.

Endometriosis: lining-like tissue outside the womb

Endometriosis involves tissue similar to the womb lining outside the uterus, for example on an ovary or the lining of the pelvis. It can also affect areas near the bowel or bladder. It may cause inflammation, scarring and pain. It is different from adenomyosis, although both can occur together. Read the NHS adenomyosis overview and endometriosis overview.

Which details should you describe?

Bleeding: note flooding, clots, bleeding through clothing, night-time changes and the number of days. Needing to change a pad or tampon every one to two hours, or bleeding for more than seven days, is worth discussing. Product absorbency varies, so counts alone do not measure severity.

Pain and pressure: record when pain starts and whether it continues between periods. Pain during sex, passing urine or opening the bowels also matters, especially if it follows the cycle. A sense of pressure, constipation or frequent urination can accompany fibroids, but these symptoms have other causes too.

Energy: tell the doctor about unusual tiredness, palpitations or breathlessness. Ongoing blood loss can lead to iron deficiency and anaemia. Treating the bleeding and rebuilding your blood count may both be needed.

When should you get medical help?

Arrange a medical review if symptoms repeatedly interrupt daily life, pain is worsening, or you bleed between periods or after sex. Bleeding after menopause should always be assessed. Pelvic pain with fever or unusual discharge needs prompt advice. You can read more about pelvic-pain warning signs.

Could something else be causing it?

Yes. Polyps inside the womb, changes in ovulation, bleeding disorders, some medicines and a copper intrauterine device can contribute to heavy bleeding. Pelvic infection, ovarian cysts, bowel or bladder problems and pelvic-floor pain can cause discomfort. Pregnancy-related bleeding must be considered when relevant. Less commonly, abnormal bleeding signals a change in the womb lining that needs further investigation.

Bring a medicine list, including medicines that affect clotting. Do not stop prescribed medicines yourself. The heavy-periods symptom page gives a broader starting point.

What can the tests tell you?

A gynaecologist will ask about your cycle, symptoms, previous treatment and pregnancy plans. An examination may help; the clinician should explain it and ask your consent. Say if an internal examination or scan concerns you so you can discuss alternatives.

• Blood count: checks haemoglobin and anaemia. Further tests, including iron studies or a pregnancy test, depend on the situation.
• Pelvic ultrasound: helps assess fibroids, the uterine wall and ovaries. An internal vaginal scan can give useful detail when appropriate and acceptable to you.
• MRI: may clarify selected findings, assess deep endometriosis or help plan a procedure. An MRI is not needed in every case.
• Hysteroscopy or a tissue sample: may be advised to assess the cavity or lining, particularly with certain bleeding patterns or risk factors. Hysteroscopy uses a thin camera through the cervix.

A normal ultrasound does not exclude endometriosis. If symptoms persist, further specialist review may be needed. Laparoscopy, a camera examination through small abdominal openings, is considered in selected cases. The NICE endometriosis guidance explains this approach.

How does treatment differ?

Treatment should address the symptoms, the likely cause and what matters to you. A fibroid without troublesome symptoms may be monitored. For heavy bleeding or pain, medicines may help: options include bleeding-reducing medicine, anti-inflammatory pain relief or hormonal treatment. A hormone-releasing intrauterine system suits some people. These need a review of your medical history and pregnancy plans.

For fibroids, surgery may remove individual growths while keeping the womb (myomectomy), or remove the womb (hysterectomy). Some fibroids projecting into the cavity can be removed through the cervix. Embolisation and selected ablation techniques are other options to discuss. The fibroid treatment guide compares these choices.

Adenomyosis care often starts with symptom-control medicines or a hormonal intrauterine system. When symptoms remain severe, a gynaecologist can discuss further options, including hysterectomy. Endometriosis may need pain treatment, hormonal medicines or specialist surgery, with fertility and longer-term pain support where needed. Removing the womb alone does not guarantee that endometriosis pain will resolve.

Where does interventional radiology fit?

For selected people with symptoms caused by fibroids, uterine artery embolisation offers a way to shrink fibroids while keeping the womb. An interventional radiologist guides a thin catheter through an artery and delivers small particles to reduce blood flow to the fibroids.

Assessment considers the scans, bleeding pattern, other possible causes and future pregnancy plans. Discuss pain after the procedure, infection, possible effects on ovarian function and the chance of needing another treatment. It is not a standard treatment for endometriosis. Adenomyosis needs its own specialist discussion; a fibroid treatment plan cannot simply be assumed to apply.

Cramping and tiredness can follow embolisation, so arrange help and recovery time. Improvement and shrinkage develop over time. Return to work depends on your recovery and the work you do. Read the ACR/RSNA treatment overview and recovery advice from Guy’s and St Thomas’.

What if you want a future pregnancy?

Raise this early, even if pregnancy is only a possibility for the future. Keeping the womb and protecting fertility are separate considerations. Myomectomy, embolisation and ablation have different implications; discuss the evidence and uncertainties with the gynaecologist and IR team before deciding.

Endometrial ablation and fibroid ablation are different. The first treats the inner lining to reduce bleeding; the second targets a fibroid. Endometrial ablation is unsuitable if you want a future pregnancy. It does not provide contraception, and pregnancy afterwards can be dangerous. Hysterectomy removes the ability to carry a pregnancy. Treatment for endometriosis also needs to account for whether you are trying to conceive.

Questions to take to your consultation

• Which finding best explains my bleeding or pain? Could two conditions coexist?
• Do I have anaemia, and how will it be treated?
• What can we try first, and when will we review whether it helps?
• How does each option affect pregnancy, recovery and the chance of another procedure?
• What should I do if bleeding or pain worsens while I wait?

Bring previous scans and reports, your medicine list and a short symptom record. The consultation preparation page can help you organise them.

Common questions

Can these conditions occur together?

Yes. Finding fibroids does not exclude adenomyosis or endometriosis. Persistent symptoms deserve review even when one diagnosis is already known.

Does heavy bleeding always mean fibroids?

No. The bleeding pattern, examination and appropriate tests help identify the cause. A symptom checklist cannot make that diagnosis.

Does a normal scan mean I should ignore the pain?

No. Explain what the pain prevents you from doing and seek follow-up if it continues. Some causes, including endometriosis, may need assessment beyond a routine ultrasound.

Continue reading

• Heavy periods: symptoms and assessment
• The detailed guide to fibroids and treatment choices
• Fibroid embolisation explained in pictures
• Other patterns of pelvic pain
• Prepare for a consultation