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A member asked:
What can cause a menstrual cycle go from at least 29 days apart to 18-20?
A doctor has provided 1 answer
Irregular cycles: Your period can be irregular for many reasons. Sometimes there are other medical problems. Sometimes it's just a function of young age. Sometimes there are hormonal problems. If you do not resume a normal menstrual pattern, you should see your doctor about this. In the teenage years, some cycle irregularity can be normal.
Answered 1/23/2016
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