Could I be pregnant?!

Krystle

So, my fiance and I finally did it. He came inside me.. the next day, I got my period. And they only last 3-4 days however, he came inside me and the next day I got my period but also have reeeally bad pains. Never experienced before. Like, my inner thighs, lower back and lower abdomen feels bruised... could I get pregnant while on my period? ... I read that sperm stays alive for 3-5 days in there.. very hopeful! Advise... GO!