A member asked:

What cause a women's menstrual cycle to change from getting it on the 15th of every month to the 5th?

A doctor has provided 1 answer
Dr. Jeff Livingston answered

Specializes in Obstetrics and Gynecology

Normal: Normal periods are every 21-35 days. They are not following the lunar calendar. A shift in the day of the month is not weird or unexpected.

Answered 6/30/2017

5.3k views

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