Me and my boyfriend was fooling around and he rubbed his penis on my vagina. After a while he put his penis about a centimeter inside me. But he had pre-cum. I was wearing a tampon because I had my period and right after he rubbed it on me I went and changed my tampon and I washed myself down there. Can I get pregnant? He also had an orgasm 2 days ago so the sperm is possibly destroyed. So I am sure his pre-cum didn't contain any sperm.