I was with my boyfriend, and he pressed his penis into my vagina. I was wearing sorta thin sweat pants and underwear, but he was wearing nothing. I wanted to know if it is possible I could become pregnant? There was only pre-ejaculation. I checked my sweatpants several minutes later, and they didn't feel moist where he rubbed. He also didn't fully go into me. I'm not too sure he went in at all; it was very slightly if any... It just was pressure from him pressing into that area I think, but if it did go in, it did not go very far. It's also been a week since my last period, if that's any help. Thank you.