Okay, so yesterday, I was at my boyfriend's house and we got carried away, kinda. We were making out and then he got on top of me. He stripped naked, but I had on leggings and underwear. He put his penis partially in my vagina and I'm unsure if the wetness was from him or me, but after my leggings were, like, soaked. So yea. I've read that sperm can't swim through fabric, but I've read other places that it can. And the day previous I had jus ended my period. So I jus wanna take this precaution rather than be sorry later. How high/low is my percentage I am pregnant?