Welcome again. The first day of your period is day one of the new menstrual cycle. It ends on the first day of your next period. Use a calendar to mark the day your period starts. Count the days in between. That is how you calculate the length of your menstrual cycle.
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Hello Mhiz Vicky,
Welcome again. The first day of your period is day one of the new menstrual cycle. It ends on the first day of your next period. Use a calendar to mark the day your period starts. Count the days in between. That is how you calculate the length of your menstrual cycle.
Regards,
February 24, 2017 - 6:40amMaryann
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