A member asked:

Does the length of menstrual cycles change throughout the year? mine had been 28 days for as long as i remember. the last 2 cycles have been 30 days.

A doctor has provided 1 answer

Change can happen: A normal cycle length can be anywhere between 21 and 35 days. A change from 28 to 30 days is well within the range of normal variation.

Answered 9/15/2015

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