The short answer: Most people lose about 20 to 90 ml of blood over a whole period, roughly one to five tablespoons. Your period is probably heavy if you need to change your pad every one to two hours, wear two products at once, bleed for more than seven days, pass clots bigger than about 2.5 cm (around the size of a ₹10 coin) or bleed through to your clothes or bedsheet. Heavy periods are common and usually treatable, so if this keeps happening, see a gynaecologist.
What counts as a heavy period?
Doctors call heavy periods menorrhagia, which simply means heavy menstrual bleeding. There is no single number that defines it, because nobody measures their blood loss at home. Instead, doctors look at how your period affects your products, your sleep and your daily life.
A typical period lasts two to seven days, often about five. Bleeding is usually heaviest on the first two days, then eases off and turns pink or brown towards the end. The usual gap between periods is anywhere from 21 to 35 days.
Most people lose between 20 and 90 ml of blood across the whole period. Period blood also contains womb lining and fluid, so it often looks like more than it is. Some people lose more than 90 ml, and for some of them that is simply their normal. What matters is whether it is affecting your health and your life.
Seven signs your period is heavier than it should be
Most of us only ever see our own periods, and in many families heavy bleeding is brushed off with "it happens to everyone". So doctors rely on practical signs instead. If two or more of these sound familiar, your period is likely heavy.
- You change every one to two hours. On your heavier days, your pad, tampon or period panty is full within an hour or two, or you empty a menstrual cup more often than its instructions say.
- You double up. You wear a pad with a period panty, or two pads at once, just to feel safe.
- Your period lasts more than seven days. Not just a day or two of brown spotting at the end, but proper bleeding past day seven.
- You pass large clots. Clots bigger than about 2.5 cm, roughly a ₹10 coin, are a sign of heavy flow.
- You bleed through. You stain your clothes, your chair or your bedsheet, or you get up at night to change.
- You plan your life around it. You skip college, work, exercise, travel or family functions because of your flow.
- You feel tired or breathless. Constant tiredness, breathlessness or dizziness, especially during and after your period, can be signs of anaemia from blood loss.
How to measure your flow at home
You don't need special equipment. For your next two or three periods, keep a simple note on your phone or in a diary. A written record is far more useful to a doctor than "it feels like a lot".
- Products per day: how many pads, tampons or period panties you use each day, and how full each one is when you change it.
- Night changes: how many nights you had to get up, and whether you stained the sheet.
- Clots: whether you passed any, roughly how big, and on which days.
- Length: the first and last day of real bleeding.
- How you felt: tired, dizzy, breathless, or fine.
If you use a menstrual cup, the measurement lines on the side give you an even clearer picture. Here is a rough guide to what your notes might be telling you.
| What you notice | Likely meaning | What to do |
|---|---|---|
| Pad lasts 3 to 4 hours or more on day 1 and 2 | Usual flow for most people | Nothing, keep tracking if you like |
| Pad full every 1 to 2 hours on heavy days | Heavy flow | Track two or three cycles and see a doctor |
| Clots smaller than a ₹1 coin | Common on heavy days | Usually nothing to worry about |
| Clots around a ₹10 coin (2.5 cm) or bigger | Heavy flow | Note it down and book a check-up |
| Bleeding more than 7 days | Long period | See a doctor if it happens more than once |
| Soaking a pad every hour for 2 hours or more | Very heavy bleeding | Get medical help the same day |
Why one period might be heavier than usual
An occasional heavy month is often a one-off. Common reasons include:
- A cycle without ovulation. If you don't release an egg one month, the hormone progesterone doesn't rise as usual. The womb lining can build up more than normal and then shed all at once, often late and heavy.
- Stress, illness or a change in routine. A bad fever, exams, a wedding in the family or a move to a new city can shift your hormones for a cycle or two.
- Contraception changes. Stopping the pill, or having a copper IUD (the copper T) fitted, can make periods heavier, especially in the first few months.
- After having a baby. Your first periods after pregnancy can be heavier than before. Read more in our guide to the first period after pregnancy.
- Life stage. Periods can be heavier and less predictable in the first couple of years after they start, and again in your 40s as you approach menopause.
If there is any chance you could be pregnant, a sudden heavy bleed needs a doctor's check the same day.
Causes of heavy periods that keep coming back
If heavy periods happen most months, there is often a cause a doctor can find and treat. Sometimes no cause is found, and treatment still helps.
Conditions of the womb and ovaries
- Fibroids: non-cancerous growths in or around the womb. They are very common, especially in your 30s and 40s, and can make the lining larger and bleeding heavier.
- Adenomyosis: the womb lining grows into the muscle wall of the womb, often causing heavy, painful periods.
- Endometriosis: tissue similar to the womb lining grows outside the womb, often with strong period pain. Our guide Is My Period Pain Normal? explains the pain side.
- Polyps: small growths on the lining of the womb or cervix.
- PCOS: polycystic ovary syndrome can cause long gaps between periods, then a very heavy one. See PCOS Explained.
- Pelvic inflammatory disease: an infection of the womb, tubes or ovaries, often with pain, fever or unusual discharge.
Other health causes
- Thyroid problems, particularly an underactive thyroid.
- Bleeding disorders, such as von Willebrand disease. Think about this if you also bruise easily, get frequent nosebleeds, bled heavily after a tooth extraction, or have had very heavy periods since your first one.
- Some medicines, including certain blood thinners (anticoagulants) and chemotherapy drugs.
Rarely, heavy bleeding can be a sign of womb cancer. This is uncommon, especially in younger women, but it is one more reason not to live with persistent heavy periods without a check-up.
Heavy periods and anaemia: why this matters in India
Every heavy period takes iron out of your body. Your body uses iron to make haemoglobin, the part of red blood cells that carries oxygen. When you lose more iron than you take in, month after month, you can develop iron deficiency anaemia.
Anaemia is already very common here. According to the National Family Health Survey (NFHS-5, 2019 to 21), 57% of Indian women aged 15 to 49 are anaemic, up from 53.1% in NFHS-4. Heavy periods can push your levels even lower.
Signs of anaemia
- Feeling tired all the time, even after sleep
- Breathlessness when climbing stairs
- Pale skin, pale inner eyelids or pale nails
- Dizziness, headaches or a racing heartbeat
- Hair fall and cold hands and feet
What helps
If you have heavy periods and any of these signs, ask your doctor for a haemoglobin test. It is a simple, inexpensive blood test.
Iron-rich foods help: palak and other green leafy vegetables, rajma, chana, dal, ragi, eggs, fish and meat. Pair them with a source of vitamin C, such as amla, lemon on your dal, guava or oranges, which helps your body absorb iron. Try not to drink tea or coffee right with your meals.
Don't start iron tablets without a test. Your doctor will decide whether you need them and for how long.
What the doctor will do
Questions and tests
A gynaecologist will ask about your cycle, how long your periods last, how often you change, clots, pain, and whether you might want to get pregnant. Bring your notes. They may examine your tummy and, with your consent, do an internal examination.
Common tests include a blood test for haemoglobin and iron, a thyroid test, and a pelvic ultrasound to look for fibroids, polyps or adenomyosis. Sometimes a doctor suggests a closer look inside the womb (hysteroscopy) or a small sample of the lining (biopsy).
Treatment options
Treatment depends on the cause, your age and whether you want children. Your doctor may suggest:
- Tranexamic acid: tablets taken only during your period to reduce bleeding.
- Anti-inflammatory painkillers: such as mefenamic acid or naproxen, which can reduce both pain and blood loss.
- Hormonal options: the combined pill, or a hormonal coil (intrauterine system) that releases a hormone inside the womb and often makes periods much lighter.
- Iron supplements: to rebuild your levels if you are anaemic.
- Procedures: removing fibroids or polyps, or thinning the womb lining (endometrial ablation). Removing the womb (hysterectomy) is a last option, usually only when other treatments haven't worked and you don't plan more children.
Don't start hormonal tablets on your own, or take tablets a friend or chemist suggests, to stop a heavy period. They can hide the cause and aren't safe for everyone.
See a doctor if
- Heavy periods are affecting your daily life, or have been going on for a few months
- You have severe period pain
- You bleed between periods or after sex
- You have pain when peeing, passing stools or during sex
- You feel tired, breathless or dizzy most of the time
- Your periods have suddenly become much heavier than your usual
- You have any bleeding after menopause
Get urgent help if
Call 112 or 108, or go to the nearest hospital emergency department, if:
- You soak through a pad every hour for two hours or more
- You feel faint, very dizzy, confused, or your heart is racing
- You are or might be pregnant and are bleeding heavily or passing tissue
- You have severe tummy pain, fever or foul-smelling discharge along with the bleeding
Staying comfortable on heavy days
While you and your doctor work on the cause, good products and a few habits make heavy days less stressful.
- For nights: a high waist period panty gives more front-to-back coverage, so you worry less about leaks when you lie down. On your heaviest night, you can add a pad as backup.
- For skirts, dresses and sleep: period boy shorts have a longer leg and a wider absorbent zone.
- For travel, exams and long days: disposable period panties are worn once like underwear and are absorbent all around, so there's less to manage away from home.
- Change often: on very heavy days, change as often as your flow needs, whatever you use.
- Carry a kit: a spare product, a dark dupatta and a zip pouch for used items.
Frequently asked questions
How many pads a day is too many? There is no fixed number, because pads vary in size and absorbency. What matters more is how quickly you soak through one. Needing a fresh pad every one to two hours on heavy days is a sign of heavy flow.
Is it normal for the first two days to be the heaviest? Yes. For most people, days one and two are the heaviest and the flow eases after that. It's a concern when even those days mean changing every hour or two.
Can stress make my period heavier? It can. Stress can disrupt ovulation for a cycle, which sometimes leads to a later, heavier period. If it happens every month, see a doctor rather than putting it down to stress.
Why are my periods heavier in my late 30s and 40s? Hormone levels shift in the years before menopause, and fibroids and adenomyosis become more common. Read How Periods Change in Your 30s and 40s for more.
Can heavy periods cause weakness? Yes. Losing a lot of blood every month can lower your iron and haemoglobin, leading to anaemia, which causes tiredness, breathlessness and dizziness. A blood test can check.
Can I use period panties on heavy days? Yes. Every Fabpad period panty has the same absorbency, so pick a High Waist or Boy Shorts style if you want extra coverage, change as often as your flow needs, and pair it with a pad on your heaviest night if you want extra backup.
Are heavy periods a sign of cancer? Rarely. Most heavy periods are caused by hormone changes, fibroids, polyps or adenomyosis. Because a small number are linked to womb cancer, ongoing heavy periods, bleeding between periods and any bleeding after menopause should always be checked.
Related reading
- Blood Clots in Your Period: Normal or Not? The ₹10 Coin Test
- Why Is My Period Lasting Longer Than Usual?
- Period Panties for Sleep: How to Stay Leak-Free All Night
- Irregular Periods: Causes, Tests and What Helps
This article is for general information and doesn't replace advice from your doctor.
Sources: NHS: Heavy periods, NHS: Periods, NHS: Period problems, Lok Sabha: Anemic Women, answer citing NFHS-5 anaemia data