FEEL WELL • PERIODS

Heavy periods in perimenopause:
what's normal, and what to check.

LAST REVIEWED: 2026-10-25 • By the LatelyWell editorial team • How we write & review

Periods can become heavier as you approach menopause, and it is easy to wonder whether what you are seeing is "just perimenopause". Here is how the NHS defines heavy periods, what can cause them, and when to see a doctor.

Can periods get heavier in perimenopause?

Yes. The NHS says that during perimenopause your periods may become irregular, lighter or heavier, and that periods can be heavy at different times of life, including approaching menopause. Heavy periods (also called menorrhagia) may be normal for you, but treatment can help if they affect your daily life.

Signs your periods are heavy

The NHS says you may have heavy periods if you:

• need to change your pad or tampon every 1 to 2 hours, or empty a menstrual cup more often than recommended
• need to use 2 types of period product together, such as a pad and a tampon
• have periods lasting more than 7 days
• pass blood clots larger than about 2.5cm
• bleed through to your clothes or bedding
• avoid daily activities or take time off work because of your periods
• feel tired or short of breath a lot

Possible causes

The NHS lists several possible causes besides the perimenopause itself, including fibroids, endometriosis, adenomyosis, pelvic inflammatory disease, conditions that make you bleed more easily (such as Von Willebrand disease) and some medicines, including some anticoagulants. Rarely, heavy periods can be a sign of womb cancer. That is why a change in your bleeding is worth checking rather than assuming.

When to see a GP or doctor

The NHS advises seeing a GP if:

• heavy periods are affecting your life
• you have had heavy periods for some time
• you have severe pain during your periods
• you bleed between periods or after sex
• you have heavy periods with other symptoms, such as pain when peeing, pooing or having sex

The NHS menopause pages also advise contacting a GP if you still have periods but your bleeding pattern has changed and you are bleeding more, not less, than before.

What treatment can involve

The NHS says heavy periods do not always need treatment. If they affect your life, GP treatments include some types of contraception (such as an IUS or the combined pill), medicine to reduce bleeding such as tranexamic acid, and prescription anti-inflammatory painkillers. If these do not work, or a condition may be the cause, you may be referred for tests or to a specialist. You may also have blood tests to check for problems such as iron deficiency anaemia.

Tracking your bleeding

A simple record makes appointments easier. Note:

• the start and end date of each period
• how often you change products on the heaviest days
• any clots, flooding or bleeding through clothes
• bleeding between periods or after sex
• tiredness or breathlessness

Our free symptom tracker has space for this, and our guide to symptoms worth tracking explains what else to record.

Frequently asked questions

Is it normal for periods to get heavier before menopause?

The NHS says periods can become heavier during perimenopause and can be heavy approaching menopause. It is still worth seeing a GP if they affect your life or your pattern has changed to heavier bleeding.

How do I know if my period is too heavy?

The NHS signs include changing a pad or tampon every 1 to 2 hours, periods lasting more than 7 days, clots larger than about 2.5cm and bleeding through to clothes or bedding.

Can heavy periods make me tired?

Feeling tired or short of breath a lot is one of the NHS signs of heavy periods, and a GP may arrange blood tests for iron deficiency anaemia.

Can HRT cause irregular bleeding?

The NHS says HRT in perimenopause may cause some irregular bleeding or spotting that should settle within 6 months. Talk to your GP if it continues after that.

Where to find reliable information

If you want to read further, these organisations publish free, evidence-based information for the public:

• UK: the NHS menopause pages, the NICE menopause guideline and the Women's Health Concern factsheets from the British Menopause Society.
• US: The Menopause Society, ACOG and the National Institute on Aging.
• Australia: Jean Hailes for Women's Health and the Australasian Menopause Society.

Guidance differs a little between countries, and treatment names and availability vary, so check what applies where you live and talk to a clinician about your own situation.

The bottom line

Heavier periods are common in perimenopause, but they are not something you have to put up with, and some bleeding changes always need checking. Track what is happening and talk to a doctor if bleeding affects your life or changes pattern.

Educational information only; not medical advice, diagnosis or treatment. Seek professional care for symptoms that are severe, persistent, worsening or concerning.