My last period was Dec 26 and lasted about 4 days. I was taking birth control but after I finished my period and that pacl of birth control I stopped taking it due to being unable to find my new packs. I've had unprotected sex with my boyfriend and just got my period or so i think it is today...but the thing is its black...the darkest my periods have ever been was brown so whats going on? Was it a miscarriage or something to do with pregnancy or could it be something else? %-) Please help...