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A member asked:
What would cause your period to come in 18 days when it is always regularly?
A doctor has provided 1 answer
Depends: There are many reasons a period might come early. Medications can effect hormones and the menstrual cycle. Stress can have a major impact on the duration of a cycle. A person could develop an ovarian cyst that effects when a menstrual cycle occurs. It may not be unusual if it happens once. It is recommended to monitor for trends and if recurs on a regular basis this should be evaluated.
Answered 9/28/2016
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