I've been taking monophasic combined birth control for well over a year now.
My pills start on Monday. When I take my last pill on Sunday, my period will usually come Thursday morning.
However, my past few periods have consisted of me getting my period Wednesday night. And now today, it's Tuesday afternoon, and it's starting.
I have been on Marlissa birth control and have not changed my prescription.
Does anyone know why this is happening? I have been sexually active with my boyfriend without a condom and I'm starting to get worried. What should I do?
Period keeps changing on the same birth control?
Added 26 May 2015:
My period used to be Thursday to Tuesday and now it's usually Wednesday night to Wednesday morning. What is happening?
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