What Causes Missed Periods And Abnormal Pap Smear?

So last feb i got raped by 2 guys. i didnt have a period until august when i was medicated to have one. then i was put on BC to regulate it but i stopped takin it in like october. now i havent had a period since mid january and im gettin physically sick from it and stuff. Also, in november i had an abnormal pap smear. I do not know what is going on.