A member asked:

Is it normal to have 2 periods in one month that are 21 days apart?

A doctor has provided 1 answer

Probably: The normal length of time between cycles can be anywhere from 21-35 days. So 2 cycles that are 21 days apart is normal. If this is a change from your typical cycle length, I recommend keeping a calendar for a few months to take in to discuss with your doctor.

Answered 11/3/2015

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