Estimate your next ovulation day, fertile window, and next period using your last menstrual period date and cycle length.
This tool provides estimated dates and should not be used as a sole method for conception or contraception. Medical conditions and irregular cycles may affect the accuracy. Always consult a healthcare provider.
Ovulation occurs about 14 days before your next period. The 5 days before ovulation plus the day of ovulation are considered the most fertile window.
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