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how to calculate the average menstrual cycle length. Calculating your average menstrual cycle length If you do this for a few months youll know how to count your period cycle days and youll be able to figure out your average cycle length. To calculate menstrual cycle length you count the number of days from day one of your period CD 1 up to and including the day before the next period starts.
Find your average and most common cycle lengths Enter the first day of your last few menstrual periods to view your shortest and longest cycles and to calculate your. Calculating your average menstrual cycle length If you do this for a few months youll know how to count your period cycle days and youll be able to figure out your average cycle length. The average menstrual cycle lasts 28.
If you want a correct picture of your cycle you should start the count from day 1.
A menstrual cycle is counted from the first day of the menstrual bleeding or period to the first day of the next period. Sometimes your own cycle can be as short. To calculate menstrual cycle length you count the number of days from day one of your period CD 1 up to and including the day before the next period starts. An estimated menstrual cycle period can be calculated by following steps 1 through 3.