Looking for information about menstruation, PMS or contraception? Concerned about a late period or irregular periods? Our menstrual cycle can sometimes play tricks on us.

Find plenty of information and advice on the subject below!

Menstrual cycle: Length

The first day of menstruation (your period) is considered the first day of the menstrual cycle and the last day of the cycle is the day before the next menstruation. The length of a menstrual cycle varies from woman to woman and from month to month, but it usually lasts between 21 days (short menstrual cycle) and 35 days (long menstrual cycle). A woman is considered to be regular if the length of her menstrual cycles is stable or varies by only a few days. In adolescence and the approach of menopause, the menstrual cycle is more variable and difficult to predict.

Use our PERSONAL CALENDAR to predict your future cycles and to determine your fertile window (calculate your ovulation)!