Cycles are by days : Menstrual cycles go by days, not months. The cycle is usually 28 days. Could be little more, or a little less. So your period could end at the beginning of a calendar month, but start again in 28 days, the end of the same calendar month.
Answered 3/26/2013
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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