Several reasons: An occasional irregular cycle may occur. Sometimes birth control pills can cause irregular bleeding. May be implantation bleeding. If pregnancy is a concern, a pregnancy test should be done. If irregular cycles continue- get this evaluated.
Answered 10/1/2013
5.4k views
Normal variation: Frequently stress or normal variation can cause an early period. Yes, changes in menstruation may indicate pregnancy as sometimes spotting is mistaken for a normal period.
Answered 12/3/2012
5.4k views
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