🩸 Period Calculator

days
From the first day of one period to the first day of the next – 28 on average.
days

Your next period starts

October 29, 2026

Expected to last Oct 29 – Nov 2 · in 18 days

Ovulation (estimated)
October 15, 2026
Fertile window
Oct 10 – Oct 16
Period after that
November 26, 2026

Calendar estimate only – not a method of contraception.

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