I had my period 8/10 to 8/15 and before and after that I had unprotected sex. After I had unprotected sex I did take Plan B both times (about a week in between the time i took them). I usually get my period every 3 weeks and will soon be going on birth control pills for it. I had protected sex on 8/23 and on 8/24 I woke to find that I was bleeding. (We did use latex condoms which I am allergic to but used anyway due to the fact that we have not picked up non-latex condoms and didn't want to have unprotected sex again) A few days before that I had been having some sharp pains on the right side of my lower abdomen. I almost never cramp with my periods but this time I am experiencing slight cramps and the bleeding is quite heavier and darker than usual. I was wondering if this is another period ( i have been pretty stressed with my family life the last few months, which i know can cause me to have unregular periods) or if this is a miscarriage or if it is because we used latex condoms. I know i wouldnt be very far along because i havent been sexually active until the beginning of this month.