So my boyfriend and I were hanging out tonight and I jacked him off and he EJACULATED onto his stomach. Immediately he wiped off his semen with a paper towel then went to the bathroom and supposedly wiped his stomach off again with water and a towel. He came back and I was straddled around his stomach with no pants or underwear on. I all of the sudden freaked out because I was sitting completely naked on the area where his semen had been. This happened about 10 min after he cleaned himself up. Could I get pregnant?? I was wondering the likelihood because he had wiped off the semen with the paper towel and then went to the bathroom and used water and an actual towel. When I sat on him naked it was about 10 min after this. Could there still have been some sperm that got into my vagina? How long before all the sperm died?