My boyfriend and I were basically imitating sex but he had his boxers on and I had panties on. When he ejaculated, he said he lifted himself off of me and just ejaculated in his boxers. One side of my underwear had been pushed to the side a bit just from the natural movement of what we were doing but I think the only fluids on the inside of my panties were my own. About twenty minutes later, he used the same hand he touched his boxers with to touch my vagina over my panties to basically masturbate me. Is there any chance that I could get pregnant in this situation?