i need some advice... feb 27th i got my period and had sex late that night like 3:30 am.. we used a condom but i took plan b about 15 hours later just to be safe. i was supposed to get my period 3 days ago and i haven't yet. being caught up in the moment i had sex again late last night and we did it twice. the first time i know he didn't go in me but the second time i'm not sure. both times we used a condom though. should i take another dose of plan b? i know plan b can really screw up your cycle and cause you to have further medical issues but i'd rather take it to be safe than find out i'm pregnant. i know i shouldn't have had sex but i was caught up in the moment.. i'm also still worried i didn't get my period on time. let me know if you can help me!