Can happen sometimes: An early menstrual period may be caused by changes in hormone levels, which can be due to anxiety, stress, overworking, intense exercise, fatigue, or excessive weight gain/loss. If pregnancy happens, implantation bleeding occurring 9-14 days after conception may happen, and sometimes may last long enough to mimic an early period. An ob-gyn doctor can check, if symptoms are worrisome or recurrent.
Answered 5/3/2013
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