my boyfriend and I have become sexually active for about two months. Both of us were virgins prior so everything is a bit new. I am on my period, day 3 and we decided to have sex without a condom. He pulled out and ejaculated. The sperm landed in front of me and right under my butt where I was laying. He wasn't in me but I am afraid some of it could have gotten on the outside of my vagina because I know a little was on my butt. Please help. Semi-panicking