So this happened almost a month ago. I gave my boyfriend a handjob and he came on his stomach. He wiped it off with a towel and wipe over his stomach to make sure there was no more on his stomach. About 45 minutes later he starts fingering me and about halfway through, I realize that he hadn't washed his hands. I know that sperm die once there's no more semen for them to swim in and the air exposure. My period is supposed to come this week, just a little worried. Do you think there was a possibility of sperm getting pregnant from that?