Unlikely : Normal menstrual cycle is every 28 days (21-35 days normal), with about 5 days of bleeding (2-8 days normal). Some spotting a few days before your expected period is normal. Exercise can change your periods, but is unlikely at 10 hours a week.
Answered 12/9/2013
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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