Sharp Pains Sharp Pains and blood after sex!?!?!?

[lilly]

okay well awhile back me and my boyfriend had sex and he came inside of me every other time after that it was the same he said he wasnt able to repaduce the doctor said so but people do heal... and when he was 14 he went back and the doctor said he whould be able to repaduce but he's kinda unsure about it... but anyways soo tonight i went to his place and lately my breast have become larger i get back pains my stomach turns i eat but then im still hungry i pee alote more when i squish my boob's togather it cause some pain but yeah me and him had sex then right befor we ate we had sex aging he came in me both times but the second time when he got up to go make dinner i felt a sharp pain from my vagina move up thew my stomach and to my chest it went away quickly but i went to go use the wash room and i noticed light colored blood it was too light to be my period because my periods are harsh and mean and i never feel cramps or pain.. and then i was wondering if it chould be the egg attaching to my uteris or maybe i just have a tiny cut up there... i have not taken a prego test im scared of the resault im going to take one soon tho.. because he now wants me too ... but is this jut a stage of pregnacy or is it a medical thing?