Periods & your cycle

Predict your next period, understand a normal cycle, and decode common changes like a late or brown period.

Free period calculator and doctor-reviewed guides on cycle health.

🧮 Period calculator Use the calculator · Your next period is expected one cycle length after your…

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Ovulation bleeding and mid-cycle spotting Light spotting around ovulation is common and usually harmless. A brief dip in e… Why is my period late? A period that is up to about 7 days late is usually normal. If you are sexually …

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Ovulation & fertility Understand when you ovulate, read the signs of your fertile window, an… Pregnancy & early signs From your due date and how many weeks pregnant you are, to early-pregn… Birth control & the safe period Honest, evidence-based answers on the “safe period” and how reliable e…

Medical disclaimer: This tool and content are for educational purposes only and are not a substitute for professional medical advice. If something feels wrong, see a doctor.