Good afternoon. I just had sex with my boyfriend.we did use condom but unfortunately it happened to tear off while having sex.he came out half inside me and half outside.when we understood about it I immediately went to urinate .and I am thinking of taking I pill before 72 hours..is there any chances of me getting pregnant after this?.also please tell me how to take I pill and how often.. because this is the first time I ever needed it...I am really very scared.. please help..and after how long can I take a praganews pragnancy test?.. please help