I'm 18 and my ex boyfriend and I were messing around a little. I had on panties and he was completely naked. We humped each other until we were both climax. I'm late for my period. We never had intercourse, I've been reading online that sperm can swim if it's close enough to your vaginal opening. I don't remember if he released himself on my panties or just on my leg. I'm afraid to take this test because this would really ruin my chances of running track in college. Please help!