Heavy Periods: Causes, Tests and Treatment Options
How to recognise heavy menstrual bleeding, which tests are useful, treatment choices, anaemia care and bleeding that needs urgent assessment.
Key message: Heavy menstrual bleeding is defined by its effect on physical, emotional and daily life—not by one exact measured volume. Treatment should reduce bleeding while respecting contraception and future-pregnancy plans.
Get urgent help: Seek urgent care for bleeding that rapidly soaks through pads with dizziness, fainting, severe weakness, chest pain or breathlessness; severe pelvic pain; a positive pregnancy test with bleeding or pain; or bleeding after menopause.
When is a period considered heavy?
The pattern matters: record cycle dates, duration, flooding, clots, pain, bleeding between periods or after sex, medicines and the effect on daily life.
- Needing to change a pad or tampon every 1–2 hours, empty a cup unusually often or use two products together.
- Bleeding for more than 7 days.
- Passing large clots or bleeding through clothes or bedding.
- Avoiding work, exercise, sleep or social activities because of bleeding.
- Developing tiredness, palpitations, dizziness or breathlessness from iron deficiency or anaemia.
What can cause heavy periods?
- Fibroids, adenomyosis, polyps or other changes inside the uterus.
- Ovulation problems, including PCOS/PMOS, or hormonal changes around puberty and perimenopause.
- Endometriosis or pelvic infection when pain or other symptoms are present.
- Bleeding disorders, particularly when heavy bleeding began from the first periods or there is a personal or family bleeding history.
- Medicines such as anticoagulants and some hormonal methods.
- Pregnancy-related bleeding when pregnancy is possible.
- Endometrial hyperplasia or cancer less commonly, especially with risk factors or irregular/intermenstrual bleeding.
- Sometimes no structural cause is found.
What happens during assessment?
Routine female-hormone panels are not needed for every patient. Thyroid tests are usually reserved for symptoms or signs suggesting thyroid disease.
Endometrial sampling is selected by age, bleeding pattern and risk and is commonly taken during hysteroscopy rather than as a blind routine test.
- A pregnancy test when pregnancy is possible.
- A full blood count for everyone with heavy menstrual bleeding, alongside treatment rather than delaying relief.
- Iron studies when anaemia or iron deficiency is suspected, according to the clinical plan.
- Coagulation testing when bleeding has been heavy since periods began and the personal or family history suggests a bleeding disorder.
- Pelvic examination when symptoms or the planned investigation make it appropriate, with consent and a chaperone.
- Transvaginal or pelvic ultrasound when fibroids, adenomyosis, a mass or another pelvic condition is suspected.
- Outpatient hysteroscopy when polyps, submucosal fibroids or endometrial pathology are suspected, particularly with persistent bleeding between periods or other risk factors.
How is anaemia treated?
If iron deficiency or anaemia is present, treatment may include oral or intravenous iron depending on severity, symptoms, tolerance and how quickly correction is needed. The source of bleeding still needs management; iron alone does not solve ongoing heavy loss.
Which medicines can reduce bleeding?
Do not start hormonal treatment or tranexamic acid from another person’s prescription. Choice depends on pregnancy possibility, clot risk, blood pressure, migraine, smoking, medicines and the likely cause.
- A levonorgestrel-releasing intrauterine system (LNG-IUS) is often the first option when the uterine cavity is suitable and pregnancy is not currently desired.
- Tranexamic acid is taken during bleeding and can reduce blood loss; it is not suitable for everyone, particularly where thrombotic risk needs review.
- Prescription anti-inflammatory medicines can reduce bleeding and pain but need caution with kidney disease, stomach ulcers, some asthma and anticoagulants.
- Combined hormonal contraception can regulate and lighten bleeding when medically suitable.
- Cyclical or continuous progestogen options may be used according to the bleeding pattern and contraceptive needs.
When are procedures or surgery considered?
- Hysteroscopic removal for a polyp or submucosal fibroid.
- Fibroid-specific medicine, uterine-artery embolisation, myomectomy or another procedure depending on size, position, symptoms and fertility plans.
- Endometrial ablation for selected patients who do not want future pregnancy; reliable contraception is still needed afterwards.
- Hysterectomy as a definitive option only after discussing major-surgery risks, recovery, ovarian considerations and alternatives.
How do fertility and contraception change the plan?
Tell the clinician whether pregnancy is desired now, later or not at all. Some of the most effective bleeding treatments are contraceptive, while ablation is unsuitable for anyone wanting a future pregnancy. Fibroid and endometriosis decisions may also affect fertility and ovarian reserve.
What information should I bring?
- A cycle diary or phone record showing duration, flooding, clots and pain.
- A full medication and supplement list, including anticoagulants.
- Previous blood tests, ultrasound, hysteroscopy or operation reports.
- Your current pregnancy plans and contraception preferences.
Frequently asked questions
Do all heavy periods need a scan?
No. Testing is guided by symptoms, examination and risk. Ultrasound or hysteroscopy is used when it is likely to answer a clinical question.
Can heavy periods cause iron deficiency before anaemia appears?
Yes. Iron stores may fall before haemoglobin becomes low, so symptoms and the clinical picture matter.
Is hysterectomy the only permanent solution?
No. Medication, an intrauterine system and targeted procedures may be effective; hysterectomy is one major option, not the automatic first step.
Can I start treatment before all results return?
Often yes. Symptoms can be treated while appropriate investigations are arranged, provided pregnancy and urgent causes are considered.
Does a normal ultrasound mean nothing is wrong?
No. It reduces the likelihood of some structural causes but does not exclude every cause of bleeding or pain.
Your next step
Arrange a gynaecology assessment if heavy periods affect daily life, cause pain or anaemia symptoms, or occur with bleeding between periods or after sex. Bring a cycle record, medication list, previous scans and blood results. Emergency bleeding should go directly to urgent care.
Medical and content review: Dr Mohamed Abdelghany, Obstetrics & Gynecology Specialist, MRCOG (UK), MSc Obstetrics & Gynecology – Kasr Al-Ainy, Cairo University.
Last reviewed: 22 August 2026.
This information is for general education and does not replace individual medical assessment. Severe, sudden or concerning symptoms should not wait for a routine appointment.
