Usually about 14 days before your next period — not necessarily day 14. In a 28-day cycle that's around day 14; in a 32-day cycle, closer to day 18.

How many days am I fertile each month?

About 6 days: the 5 days before ovulation plus ovulation day. The day before and the day of ovulation are the most fertile.

What's the most accurate way to track ovulation?

Combining methods is best — ovulation predictor kits and cervical mucus to predict the window, and basal body temperature to confirm ovulation afterwards.

Can I track ovulation with irregular cycles?

Calendar predictions are unreliable with irregular cycles, so rely on real-time signs like LH kits, cervical mucus and BBT. Persistently irregular cycles are also worth discussing with a doctor.

How soon can I take a pregnancy test?

For the most reliable result, test from the day your period is due. Testing earlier can give a false negative because the pregnancy hormone hasn't risen enough yet.

Ovulation Tracking

Ovulation is the main event of your cycle — and the key to timing for pregnancy. Learn when it happens, how to spot it, which tracking methods work, and use our free tools to pinpoint your fertile window.

Last updated 2026-06-17 · Pending medical review

Woman checking ovulation tracking on her phone beside a cycle calendar

Ovulation is when an ovary releases a mature egg. It usually happens once per cycle, about 14 days before your next period. The egg can be fertilised for about 12–24 hours; sperm survive up to ~5 days.

Quick facts

Not always day 14

Ovulation is ~14 days before your next period, regardless of cycle length.

Fertile window only

You can only conceive in the days around ovulation.

Can shift

Stress, illness, and travel can change timing.

Need support? Emotional Support while trying to conceive →

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