Menstruation: What Your Gynaecologist Wants You to Know

GYNAECOLOGY & WOMEN'S HEALTH Menstruation: What Your Gynaecologist Wants You to Know Clinical Perspective • 8 min read • June 2026 Every month, roughly half the world's population goes through a biological event that is still whispered about, misunderstood, or ignored — even by those experiencing it. A gynaecologist's view cuts through the noise. Menstruation is not just a 'monthly event.' From a clinical standpoint, it is a finely orchestrated hormonal process, a window into reproductive health, and — when something goes wrong — one of the earliest signals the body sends us. Understanding it properly is the foundation of good gynaecological care. The Four Phases: What's Actually Happening A menstrual cycle is counted from Day 1 of bleeding to Day 1 of the next bleed. The average is 28 days — but clinically, anything from 21 to 35 days in an adult is considered normal. MENSTRUAL Days 1–5 Uterine lining sheds. Oestrogen & progesterone at lowest. Prostaglandins trigger uterine contractions — the source of cramping. FOLLICULAR Days 1–13 FSH stimulates ovarian follicles. Rising oestrogen rebuilds the endometrium. Energy, mood, and libido typically improve. OVULATORY Day 14 ±2 LH surge triggers egg release — the peak fertile window (12–36 hrs). Cervical mucus becomes clear and stretchy. LUTEAL Days 15–28 Corpus luteum secretes progesterone. If no implantation occurs, progesterone drops, triggering the next bleed. CLINICAL NOTE Cycles consistently shorter than 21 days (polymenorrhea) or longer than 35 days (oligomenorrhea) warrant evaluation. Irregular cycles are often the first visible sign of thyroid disorders, PCOS, or hypothalamic dysfunction. What 'Normal' Bleeding Actually Looks Like One of the most common questions in a gynaecology clinic is: 'Is my flow normal?' The clinical parameters are straightforward, though rarely communicated to patients. Duration: 3 to 7 days. Bleeding beyond 7 days (menorrhagia) needs investigation. Volume: 30 to 80 ml per cycle — roughly 4 to 6 fully saturated pads or tampons over the entire period. Soaking more than one pad per hour for several consecutive hours is a red flag. Colour: Ranges from bright red to dark brown — both are normal. Dark blood simply means slower flow; the blood has had more time to oxidise. Clots: Small clots under 2.5 cm are normal on heavier days. Clots larger than a 50-paise coin regularly suggest submucous fibroids or coagulation issues. TRACKING TIP Maintaining a period diary — even a simple one — is enormously useful clinically. Cycle length variability, clot frequency, and pain severity over 3–4 months give a gynaecologist far more diagnostic information than a single visit can. Common Symptoms and Their Clinical Meaning Many symptoms dismissed as 'just period pain' have specific clinical names and causes — and manageable solutions. Dysmenorrhea (period pain) Primary dysmenorrhea — painful periods without underlying pathology — is caused by prostaglandins driving strong uterine contractions. NSAIDs like mefenamic acid or ibuprofen, taken 24–48 hours before the expected start, are the gold-standard treatment. They work better prophylactically than reactively. Secondary dysmenorrhea — pain that worsens over time or begins after pain-free cycles — signals investigation for endometriosis, adenomyosis, fibroids, or PID. 'Getting worse periods with age' is never something to simply tolerate. PMS and PMDD Premenstrual Syndrome (PMS) is common. Premenstrual Dysphoric Disorder (PMDD) is a recognised psychiatric condition linked to abnormal serotonin sensitivity to normal hormone fluctuations. Severe mood swings, rage, or depressive episodes in the luteal phase that resolve with menstruation deserve clinical assessment — not dismissal. PMDD VS PMS PMDD is not just 'bad PMS.' Symptoms must be tracked across at least two cycles and must significantly impair functioning. SSRIs, taken continuously or only in the luteal phase, are first-line pharmacological treatment. Hormonal suppression (COCPs, GnRH analogues) is an alternative. Conditions That Hide Behind 'Bad Periods' Endometriosis Endometriosis affects an estimated 1 in 10 women of reproductive age. The average time to diagnosis is 7–10 years globally — largely because pain is normalised. Characteristic features include pain that starts days before bleeding, dyspareunia (pain during intercourse), painful bowel movements during menstruation, and fatigue disproportionate to blood loss. It is a progressive condition; early intervention changes outcomes. PCOS (Polycystic Ovary Syndrome) PCOS is the most common endocrine disorder in reproductive-age women. Irregular cycles (often >35 days), acne, hair thinning, and central weight gain are hallmarks. Long-term implications include insulin resistance, increased cardiovascular risk, and elevated type 2 diabetes risk — making it far more than a 'gynaecological' issue. Thyroid Disorders Both hypothyroidism and hyperthyroidism directly affect cycle regularity, flow volume, and fertility. A TSH check is often the most underutilised first step in evaluating menstrual irregularity. ⚠ See a gynaecologist if you notice: → Cycles shorter than 21 days or longer than 35 days consistently → Bleeding that lasts more than 7 days → Soaking a pad or tampon every hour for several consecutive hours → Periods that have become progressively more painful over the years → Bleeding between periods or after intercourse → No period for 3+ months (not pregnant, not on hormonal suppression) → Severe mood symptoms in the 2 weeks before your period → Periods accompanied by fever, foul-smelling discharge, or pelvic pressure Busting Clinical Myths ✗ Myth: Period pain is just something you have to live with. ✓ Fact: Pain that significantly affects daily functioning is not normal. It has causes and treatments. Normalising severe pain delays diagnosis of endometriosis, adenomyosis, and fibroids. ✗ Myth: Using tampons can damage the hymen or affect virginity. ✓ Fact: The hymen is a partial membrane with natural openings. Tampons, menstrual cups, and pelvic exams do not change virginity — a social construct, not a medical concept. ✗ Myth: You cannot get pregnant during your period. ✓ Fact: Sperm can survive 3–5 days in the reproductive tract. With short cycles or early ovulation, intercourse during a period can result in pregnancy. Contraception remains relevant. ✗ Myth: Irregular periods always mean PCOS. ✓ Fact: Irregularity has a wide differential — stress, thyroid disease, hyperprolactinaemia, hypothalamic amenorrhea, premature ovarian insufficiency. PCOS is one diagnosis, not the only one. Hormonal Contraception and the Cycle Combined oral contraceptive pills (COCPs) suppress the natural hormonal cycle — ovulation does not occur. The 'period' experienced on the pill is a withdrawal bleed from the hormone-free interval, not a true menstrual bleed. It carries no medical necessity — continuous pill use to skip bleeds is clinically safe. Progestin-only methods (mini-pill, Depo-Provera, hormonal IUDs such as Mirena) commonly cause irregular spotting or amenorrhoea — expected and not harmful. Persistent heavy breakthrough bleeding should always be evaluated, however. ON THE PILL AND NO PERIOD? Missing a withdrawal bleed on the pill is common and rarely concerning — but if you've missed pills or are uncertain, a pregnancy test is appropriate. Consistent adherence is far more important than monthly withdrawal bleeds. Menstruation Across Reproductive Life Stages Menarche (first period) Typically occurs between ages 11 and 14, around 2–3 years after breast development begins. Cycles may be irregular for the first 1–2 years as the hypothalamic-pituitary-ovarian (HPO) axis matures. Menarche before age 8, or absence of a period by age 15 (or 3 years after breast development), requires evaluation. Perimenopause The 2–10 years before menopause are characterised by erratic cycle length, variable flow (often heavier), and vasomotor symptoms like hot flashes. Any postmenopausal bleeding — defined as bleeding 12 or more months after the last natural period — must be evaluated to exclude endometrial pathology. Menstruation is not a taboo, an inconvenience, or a purely private matter. It is a vital sign. Gynaecologists see it as a monthly report card from the reproductive system — one worth reading carefully. Disclaimer: This article is for educational purposes only and does not constitute medical advice. Please consult a qualified gynaecologist for personal health concerns.