sunday night me and my bf had sex. the condom ripped and he finished before we realized what happened. my period is supposed to start on the 13th ( tuesday- two days away). whats the possibility of me becoming/being pregnant? my cycle is 31 days ( at least for the past two, three months) and i just woke up feeling nauseaous and shaky and cold. but i could kind of feel slight cramping in my lower abdomen and pain in my back side which is normal for me. but i know there are those freak occations where this happens and women do get pregnant but considering my cycle is so long...could i really be pregnant? im not on the pill and condoms are the only protection we use o.O :-( ? !