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A member asked:
Why do i have menstral flow every 21 days instead of the usual 28 days?
A doctor has provided 1 answer
What luck!: Sounds as though you have a shorter cycle than the "usual" 28 days. Some women have shorter cycles, others longer. Only way to regulate to monthly would be birth control pills, which if trying to conceive, would not be a good thing.
Answered 3/23/2013
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