Science-backed guides on periods, ovulation, PMS, and everything your body does
New articles every week
A period is considered late after 5 days past your expected date. Stress, weight changes, PCOS, thyroid issues, and 6 other science-backed reasons your cycle may be off — and exactly when to see a doctor.
Bloating, breast tenderness, mood swings, fatigue — your body gives you clear signals 1–2 weeks before your period. Learn all 15 signs and how to track them.
Four proven methods — from basal body temperature to cervical mucus — to accurately identify your fertile window and ovulation day every cycle.
Sore, swollen breasts before your period are usually normal cyclical mastalgia. Learn the hormone science, how to tell PMS from pregnancy, and what relief actually works — ranked by evidence (including the truth about evening primrose oil).
Mood swings peak in the late luteal phase when falling estrogen drops serotonin and allopregnanolone withdrawal destabilises your brain's calm system. Learn the science, PMS vs PMDD, and what actually helps — ranked by evidence.
Period fatigue has 3 distinct causes — hormonal shifts, iron depletion, and sleep disruption. Learn which type you have, the science behind each, and what actually helps you feel less exhausted.
Period bloating is 1–3 kg of retained water caused by aldosterone — not fat. Learn exactly when it starts in your cycle, 8 remedies ranked by clinical evidence, and the foods that make it better or worse.
All 25+ PMS symptoms — from bloating and breast tenderness to mood swings and brain fog — with the hormonal reason behind each one, when to expect them in your cycle, and what the evidence says about relief.
PMDD affects 3–8% of reproductive-age women and takes an average of 12–20 years to diagnose. Learn the DSM-5 criteria, how to document symptoms for your doctor, and what treatments actually work.
Late ovulation (after day 21) delays your period and gives you fewer cycles per year, but your per-cycle conception chances stay the same. Learn 7 causes, how to track with OPKs, and exactly when to take a pregnancy test.
Anovulatory cycles can look like normal periods while silently affecting your fertility. Learn 8 key warning signs — including flat BBT charts, absent LH surge, and missing EWCM — plus how to confirm ovulation at home.
BBT rises 0.2–0.5°C after ovulation due to progesterone — learn to chart your biphasic pattern, draw a cover line, and combine BBT with OPKs and cervical mucus to confirm ovulation every cycle.
OPK strips detect your LH surge 24–36 hours before ovulation with 99%+ accuracy — but only if you test at the right time, read the lines correctly, and avoid the 6 common mistakes that make results unreliable.
The 1–2 days before ovulation give a 33% per-cycle pregnancy probability. Miss that window and it drops to near zero. This guide shows you exactly which cycle days are your best — for any cycle length.
Most couples who take a long time to conceive are simply missing the fertile window. Here is the complete evidence-based playbook — from timing sex to lifestyle changes — ranked by how much they actually matter.
Pink spotting mid-cycle is almost always ovulation bleeding — brief, harmless, and actually a useful fertility sign. Learn what it looks like and how to tell it from implantation bleeding.
Technically yes — and on a short cycle you can get pregnant from period sex. A full breakdown of cycle overlap, risk by cycle length, and how to know when you ovulate.
Egg release takes seconds — but the fertile window lasts 6 days. A full hour-by-hour timeline from LH surge to egg death, plus pregnancy probability by day.
From dry post-period days to peak egg-white mucus — a full phase-by-phase cervical mucus chart with fertility ratings, the stretch test, and what's never normal.
Only 6 days per cycle are fertile. Learn the biology behind the window, how to calculate it for your cycle length, and 5 methods to pinpoint it accurately.
Sharp twinge mid-cycle? Learn the 3 causes of mittelschmerz, how long it lasts, which side it hits, and 8 relief methods — ranked by speed.
Flow, colour, duration, cramping — 7 key differences that reveal whether you're spotting or starting your period, plus what causes spotting at each cycle phase.
No — but 25% of pregnant women bleed in early pregnancy. Learn every cause by trimester, what blood colour means, and when to go to the ER.
Three missed periods, negative test. This is secondary amenorrhea — learn the 7 causes, the exact blood tests to request, and what treatment looks like.
98% of women get their period back within 6 months. Learn the exact HPO-axis timeline, which pill type recovers fastest, and when to worry.
1 in 3 women get menstrual headaches. Falling estrogen is the trigger — learn the difference between a PMS headache and a menstrual migraine, plus 7 evidence-based remedies.
Up to 72% of women with period pain also experience back pain. Learn the prostaglandin and referred-nerve mechanism behind it — and 7 proven relief methods.
Prostaglandins are the main reason your gut goes haywire at the start of your period. Here's the science and 6 ways to get relief fast.
Low estrogen, hormonal birth control, stress, PCOS, and thyroid disorders can all shorten your period. Here are 8 causes and when to see a doctor.
Short cycles, ovulation spotting, fibroids, thyroid issues, and perimenopause — 9 real causes of twice-monthly bleeding and when it needs a doctor visit.
Only two methods are medically proven. A complete honest guide to norethisterone, pill-stacking, ibuprofen — and the truth about natural methods like lemon juice and ACV.
Metallic is normal. Fishy usually means BV. Rotten means check your tampon now. Every period smell decoded with its cause and exactly when to see a doctor.
Clots smaller than a quarter coin are normal on heavy days. Learn the 5 causes of abnormal clots, the size guide, and exactly when to see a doctor.
Irregular periods affect 1 in 5 women. Here are the 7 most common causes — from PCOS and thyroid dysfunction to stress and perimenopause — with a clear guide on when to act.
You took the test. It's negative. But your period still hasn't come. Here are 9 medical reasons — stress, PCOS, thyroid, perimenopause, and more — with exactly what to do about each one.
From ibuprofen timing tricks to magnesium, ginger, TENS, and heat — 12 evidence-ranked remedies for period pain, with the science behind each one.
Bright red, dark brown, pink, black, orange, grey — every period blood colour explained with when it's normal and the 2 colours that need a doctor visit.
Soaking through a pad every hour is not normal — and it's not something to just live with. Here are 9 real causes of heavy periods, explained clearly, with what actually helps each one.
Usually it's just old oxidized blood — completely normal. But here are all 8 causes explained, the colour guide, and the red flags that mean it's time to see a doctor.
Only one method is medically proven. Here's an honest breakdown of all 8 approaches — from stress reduction and heat therapy to the only reliable option — with evidence ratings for each.
Your body sends 7 clear signals every cycle before ovulation occurs. Learn to read egg-white cervical mucus, LH surge timing, Mittelschmerz, BBT rise, and 3 more signs most women overlook.
Period arrived before you expected? Learn the 9 proven reasons your cycle shifted — from acute stress and sleep disruption to luteal phase defects and early perimenopause — and when to see a doctor.
A normal cycle is 21–35 days — not always 28. Learn how cycle length is calculated, what drives the 4 phases, what short or long cycles mean, and how to find your personal average.
The answer depends on your personal baseline — not a general number. Learn what's normal for you, what changes period length, and the red flags that mean it's time to see a doctor.
Period 7 days late and all tests are negative? Learn the 9 most common causes — from stress and PCOS to thyroid issues — and exactly what to do next.
A 2-day delay is almost always nothing to worry about. Learn the 8 most common causes, what symptoms to watch for, and exactly when to take a pregnancy test.
A normal period lasts 2–7 days, but what's normal for you matters most. Learn what very short or long periods mean, why your period length changes, and when to see a doctor.