Perimenopause Bleeding: Heavy, Irregular & Prolonged Periods

• Irregular cycles, heavier or longer periods, and spotting are all common in perimenopause because ovulation becomes erratic and estrogen acts on the uterine lining without the balancing effect of progesterone.
• A period longer than 7 days, soaking a pad or tampon every hour for 2+ hours, clots bigger than a 2-rupee coin, or bleeding between periods deserves a doctor's review, not silent endurance.
• Any bleeding after 12 full months without a period is postmenopausal bleeding by definition and needs prompt evaluation within about 4 weeks, however light it is.
• The standard workup is simple: history, pelvic exam, a transvaginal ultrasound and basic blood tests, with an endometrial biopsy only when indicated.
• Effective, mostly non-surgical treatments exist - from tranexamic acid and cyclical progestogen to the hormonal IUD - and hysterectomy is rarely the first option.
• Heavy bleeding quietly causes iron-deficiency anaemia in most women; treat the bleeding and the iron together.

The textbook 28-day cycle with a 5-day period is a useful reference, but real cycles vary even when they are perfectly healthy. A normal cycle runs anywhere from 21 to 35 days, a normal period lasts 3 to 7 days, and normal blood loss is roughly 30 to 80 ml per cycle. Through your reproductive years your body settles into its own version of this - a pattern that is consistent and predictable for you.

Perimenopause breaks that consistency. As the ovaries run low on responsive follicles, hormone signalling becomes erratic and the orderly rhythm gives way to a confusing mix of changes. Understanding why helps the patterns make sense.

In early perimenopause, cycles often shorten because the follicular phase becomes compressed - the ovary recruits a follicle faster, ovulation comes earlier, and cycles of 22 to 25 days become common. Periods may feel heavier and seem to arrive before the last one has properly finished. Many women find this stage the most relentless. There is a fuller explanation of why periods get closer together and why the flow can pick up.

In mid perimenopause, cycles become genuinely irregular as ovulation turns hit-and-miss. Some months no egg is released at all (an anovulatory cycle), so no progesterone is produced and the lining keeps building under estrogen alone before eventually shedding - which is why a skipped month is so often followed by a heavy, long bleed.

In late perimenopause, the gaps stretch out. You might go three to six months without a period, then bleed again. Many women decide they have reached menopause, only to be reset by another bleed.

Menopause itself is defined looking backwards: 12 consecutive months with no menstrual bleeding from any cause. The average age of natural menopause in Indian women is around 46 to 48, a little earlier than the global average of 51, which is why the symptomatic bleeding window often falls in the early-to-mid forties here. For the wider picture of how this stage differs from menopause proper, see perimenopause vs menopause.

Gynaecologists worldwide use a classification called PALM-COEIN (from FIGO) to organise the causes of abnormal uterine bleeding. It splits causes into two groups.

The structural causes (PALM) are things you can see or measure: Polyp, Adenomyosis, Leiomyoma (fibroid) and Malignancy or hyperplasia. The non-structural causes (COEIN) are Coagulopathy (a clotting problem), Ovulatory dysfunction, Endometrial, Iatrogenic (medication-related) and Not yet classified.

Most perimenopausal bleeding ultimately comes from the COEIN side - especially ovulatory dysfunction, the erratic ovulation described above. But the PALM causes matter enormously, because they are common in this exact age group and each has its own treatment. The whole point of investigation is to rule the PALM causes in or out before settling on "it's just your hormones."

• Soaking through a standard pad or tampon every hour for 2 or more hours in a row
• Needing double protection (a pad plus a tampon, or two pads)
• Getting up to change protection during the night
• Passing blood clots larger than a 2-rupee coin (about 25 mm)
• Bleeding through clothes or bedding
• Cutting back on work, travel or daily activities because of the bleeding
• Signs of anaemia - tiredness, breathlessness, palpitations, looking pale

Unpredictable timing is the signature of mid perimenopause, and it is driven by anovulation. The orderly cycle of your reproductive years depended on ovulation producing a steady luteal phase and a predictable bleed. When ovulation becomes erratic, the cycle's internal clock disappears and bleeding loses its rhythm.

In practice this shows up as cycles longer than 35 days, cycles shorter than 21 days, periods that vanish for several months then return, short and long cycles alternating chaotically, and bleeding at times that bear no relation to any recognisable cycle.

The useful skill is telling reassuring change from change that needs a look. Reassuring patterns include variability that builds gradually over months to years with no other red flags, the odd skipped cycle followed by a fairly normal bleed, and the lengthening gaps that mark late perimenopause. Concerning patterns include a sudden onset of irregularity, persistently very heavy or very prolonged bleeding, spotting between periods, bleeding after sex, and any bleeding after a gap of 12 months or more.

A question that comes up constantly is whether to investigate every change or simply accept it. The general principle: any genuinely new pattern in a woman over 40 deserves at least a history and examination, with ultrasound and biopsy added depending on the pattern and red flags. Investigation is inexpensive; missing significant disease is not. If you also want predictability back for quality-of-life reasons, options such as cyclical progestogen, the combined pill or the hormonal IUD can regularise things - more on that below. Many women say the unpredictability itself is the hardest part, and that simply tracking cycles in a diary or app reduces the distress even while the underlying pattern stays messy. Bleeding is rarely the only change; the signs of perimenopause often arrive together.

Not every perimenopausal change is more bleeding. A large share of women experience the opposite - periods that grow lighter and shorter, with cycles that stretch further and further apart until they stop. This tracks the natural decline of ovarian function: less robust follicles, lower estrogen, less lining build-up and a lighter shed. It is often the gentler route through the transition.

The same principle still applies: any genuinely new pattern over 40 deserves at least a baseline check. But the threshold for aggressive investigation is lower for light bleeding without red flags, because the worrying structural causes usually announce themselves with heavy or prolonged bleeding rather than light flow. Light bleeding that includes spotting between cycles, follows sex, or arrives after a 12-month gap still needs evaluation.

The expected late-perimenopause trajectory is lengthening gaps - months apart, then cessation - with the final period typically in the late forties to early fifties (around 46 to 48 for Indian women). Some women stop, then have a single isolated bleed months later before stopping for good; that is reassuring if it falls within 12 months of the previous period, but a red flag if it comes after a clear 12-month gap.

If the unpredictability bothers you even without red flags, the hormonal IUD or a low-dose combined pill can deliver predictable light cycles or none at all. That is a quality-of-life choice, not a medical necessity, and one to make with your gynaecologist after a baseline check. The non-negotiable rule bears repeating: any bleeding after 12 clear months without a period is postmenopausal bleeding and needs prompt evaluation, however light.

• Any vaginal bleeding after 12 full months without a period (postmenopausal bleeding) - see a doctor within about 4 weeks, however light
• Bleeding so heavy you soak a pad or tampon every hour for 2 or more hours, or pass clots bigger than a 2-rupee coin
• A period lasting longer than 7 days, or bleeding that simply will not stop
• Bleeding or spotting between periods, or bleeding after sex
• A sudden change to much heavier, longer or more frequent bleeding
• Symptoms of anaemia - persistent tiredness, breathlessness on mild exertion, palpitations, dizziness or unusual pallor
• Bleeding with new pelvic pain, pressure, a feeling of fullness, or urinary or bowel changes
• Feeling faint, a racing heart, or breathlessness during a heavy bleed - this is urgent; go to a hospital

• History: the timing, duration and pattern of bleeding; your previous baseline; associated symptoms (pain, pressure, discharge, weight loss); sexual, contraceptive, obstetric and gynaecological history; family history of gynaecological or bowel cancer (which can point to Lynch syndrome); medications; and smoking and alcohol use. The history alone often suggests the cause.
• Pelvic examination: inspection, a speculum look at the vagina and cervix, and a bimanual exam to assess the size and mobility of the uterus and feel for any masses. A Pap and HPV test are taken if you are due.
• Transvaginal ultrasound - the central investigation. It measures the endometrial thickness, characterises fibroids, finds polyps, suggests adenomyosis and assesses the ovaries. Saline infusion sonography is added when a focal lesion is suspected but not clearly seen.
• Blood tests: a complete blood count and serum ferritin to check for iron-deficiency anaemia, thyroid function (thyroid disease is a common, easily missed contributor), and - depending on the picture - a clotting screen, prolactin and a pregnancy test.
• Endometrial biopsy when indicated: when the lining is thickened beyond the cut-off, when a focal lesion is seen, when bleeding is persistent or recurrent, when there are risk factors for endometrial cancer (obesity, diabetes, Lynch syndrome, tamoxifen use), or for any postmenopausal bleeding. An office pipelle biopsy is well tolerated and cheap (around Rs 1,000-3,000); hysteroscopy with a directed biopsy (around Rs 5,000-12,000) is preferred when a focal lesion needs characterising or removing.
• Further tests as needed: colposcopy for an abnormal cervix, MRI for complex anatomy or suspected adenomyosis.

• Track your cycles in a diary or app. Over months, even erratic cycles reveal some pattern, and it makes planning easier.
• Keep a small kit - pads, a liner, spare underwear - in your handbag, work bag and travel bag, so an unexpected bleed never catches you out.
• Try period underwear (Indian brands like Adira and Saathi, roughly Rs 500-1,500 a pair) for unpredictable spotting days, or a menstrual cup for longer wear on heavy days. Our menstrual products comparison for India weighs up the choices.
• At work, keep supplies in your desk, arrange easy bathroom access, and consider working from home on your heaviest days. Most workplaces are more accommodating than women expect.
• For important travel, your gynaecologist can prescribe norethisterone to delay an expected period - started a few days before it is due and stopped when you want the bleed to come.
• If sex triggers bleeding, raise it with your doctor; local vaginal estrogen treats the atrophic changes behind much postcoital spotting and improves comfort within weeks.
• Take the emotional toll seriously. Anxiety, frustration and low mood after months of disruption are real - controlling the bleeding usually lifts much of this, and talking to women going through the same transition helps.

• FIGO classification (PALM-COEIN) of abnormal uterine bleeding in the reproductive years
• ACOG - Perimenopausal Bleeding and Bleeding After Menopause (FAQ)
• NICE Guideline NG88 - Heavy menstrual bleeding: assessment and management
• NHS - Menopause and perimenopause: symptoms
• Indian Menopause Society - clinical practice resources
• World Health Organization - Menopause fact sheet