Symptom · Periods & cycle
Heavy bleeding & flooding. When perimenopause turns the tap on.
Periods that soak through a super tampon and a pad in under two hours, clots the size of a coin, bleeding that runs for ten days at a stretch — this is one of the most disruptive and most under-treated parts of perimenopause. It is not something to put up with, and it is not something to be embarrassed about.
In late perimenopause, ovulation gets unreliable. Without ovulation there is no progesterone to balance the estrogen, so the uterine lining keeps thickening between bleeds and eventually sheds in one heavy, prolonged flood. Most of the time this is the hormonal picture and it is treatable. A smaller share of heavy bleeding is driven by fibroids, polyps, adenomyosis or — uncommonly — endometrial change that needs ruling out. The right move is almost never to wait it out: it's to track two cycles, name what you're seeing, and ask for the conversation.
What's happening
What's actually going on
A hormonal mismatch, often layered on top of a structural reason the uterus bleeds heavily anyway.
Unopposed estrogen thickens the lining
EvidenceWhen cycles stop ovulating, progesterone disappears for that month. Estrogen keeps the uterine lining (endometrium) building. When it finally sheds, there is more lining to lose — heavier flow, more clots, longer duration.
Fibroids and polyps make it worse
EvidenceAround 70% of women have fibroids by menopause and many have benign polyps. They don't cause heavy bleeding on their own in everyone, but layered on a perimenopause hormone shift they often become symptomatic for the first time.
Adenomyosis flares in midlife
EvidenceEndometrial tissue inside the muscle wall of the uterus thickens with the same unopposed estrogen, which is why heavy bleeding with deep, dragging cramping is so common in the 40s.
Iron stores drop quietly
MedicalMonths of heavy bleeding deplete iron long before anyone calls you anaemic. Fatigue, breathlessness on stairs, restless legs at night, brain fog and air-hunger sighing are all classic low-ferritin signs and they all improve when iron is restored.
This is not your normal period getting heavier
MedicalFlooding through clothes, clots bigger than a 10-cent piece, soaking through a super product in under two hours, bleeds longer than seven days, or bleeding that's wrecking work, sleep and sex life — all of that meets the medical definition of heavy menstrual bleeding (HMB). It is treatable.
What to try
What people actually find helps
There is a real menu here — from over-the-counter, to the Mirena coil, to a same-day procedure. Most women never get offered most of it.
Tranexamic acid on heavy days
MedicalA non-hormonal prescription tablet taken only on the heaviest 3–4 days. Cuts blood loss by roughly a third for most women. Cheap, safe for most, easy first step to ask a doctor for.
The Mirena (levonorgestrel) coil
MedicalThe single most effective treatment for heavy menstrual bleeding short of surgery. Reduces bleeding by ~90% within six months, doubles as contraception, and is licensed as the progestogen arm of MHT/HRT — so it can carry you straight into the hormone-therapy conversation.
Cyclical progesterone or the combined pill
MedicalIf the coil isn't right for you, a cyclical oral progestogen for 10–14 days each cycle, or a combined pill (where safe), can regulate bleeding and protect the lining. Worth a real conversation, not a 'try ibuprofen'.
Iron, properly
EvidenceFerrous bisglycinate or ferrous fumarate, every other day rather than daily, with vitamin C, away from tea and coffee. Get ferritin checked, not just haemoglobin — ferritin under 30 is depleted even if 'normal' on the report.
Track two cycles before the appointment
PersonalDays bleeding, products used per day, biggest clot, days you cancelled things. Two cycles of evidence shortens the doctor visit dramatically and gets you past 'are you sure it's that heavy?' on the first try.
Procedures, when meds aren't enough
MedicalEndometrial ablation (a day-case procedure that thins the lining), uterine artery embolisation for fibroids, hysteroscopic polyp or fibroid removal, and — for some — hysterectomy. None of these are 'last resort'; they are options on a real menu.
A note from us: these are things women in this community have found helpful, not medical advice or a protocol. Doses, products, and routines vary person to person, run anything new past your doctor or pharmacist first, especially if you're on medication or in surgical or medically-induced menopause.
What to track
Signals worth paying attention to
Numbers beat adjectives every time when you're asking a doctor to take this seriously.
Products per day on your heaviest day
PersonalMore than six fully-soaked products, or doubling up pad + tampon, is heavy bleeding by any definition.
Log thisTime to soak-through
MedicalSoaking through a super product in under two hours, more than once, is the line for a same-month appointment.
Clot size
PersonalClots bigger than a 10-cent piece (or a 50-pence piece) tell the doctor this is genuine HMB, not 'normal heavy'.
Log thisCycle length and predictability
PersonalBleeds closer than 21 days apart, longer than 7 days, or bleeding between periods — write the pattern down. It changes the conversation.
Log thisEnergy and breath, not just bleeding
PersonalStairs feel harder, you sigh a lot, restless legs at night, fingernails breaking — these are low-iron signals worth raising even if the period itself feels manageable.
Log this
When to seek help
When it's not just perimenopause
Most heavy perimenopause bleeding is hormonal. A short list deserves a faster route.
Bleeding after sex, between periods, or after menopause
MedicalAny bleeding more than 12 months after your last period, any post-coital bleeding, or persistent inter-menstrual bleeding wants a same-month appointment to rule out polyps, cervical change or endometrial change.
Soaking through, dizziness, fainting
MedicalHeavy bleeding plus light-headedness, breathlessness, racing heart or near-faint is an urgent (same-day) review — that's significant blood loss, not 'just a bad period'.
Bleeding that's running your life
MedicalCancelling work, planning around bathrooms, avoiding sex, dreading the next bleed: that itself is a medical reason for treatment. You do not have to be anaemic to qualify.
Bleeding with severe pain that paracetamol won't touch
MedicalDeep, dragging, can't-stand-up pain alongside heavy bleeding points toward adenomyosis or fibroids and deserves an ultrasound and a real plan, not 'try ibuprofen and a hot water bottle'.
You've already asked once and been brushed off
PersonalA second opinion from a menopause-trained doctor or a gynaecologist is reasonable. Take two cycles of tracking, a ferritin result, and the words 'heavy menstrual bleeding' with you.
Add to doctor's list
What do I do next?
Pick one. Today, not someday.
Track it for two weeks
Start a daily log for heavy or flooding periods. Two weeks of dots makes a pattern visible, and gives you something concrete to bring to a doctor or specialist.
Open symptom logRead the related guide
This sits inside a bigger picture. the periods & cycle chaos pathway walks through the wider pattern and the trade-offs.
Open the periods & cycle chaos pathwayFind the right kind of help
The right help in midlife often isn't one doctor, it's a small team. Browse a directory pre-filtered to the modality that matches this guide.
Find a practitionerTalk to your doctor
Use the printable conversation script: what to say, what to ask for, and how to ask for a second opinion if the first appointment didn't land.
Open conversation script
Take it further
What you can do next.
Track heavy bleeding & flooding over time
Two weeks of honest notes is the fastest way to spot what's changing. Free to start, charts are Premium.
Talk to others
Threads from members going through the same thing. The main community is free; quieter members-only rooms are Premium.
Find a menopause-trained doctor
For the medical conversations on this page. Searchable by region.
This guide is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider.