Hi, um. I'm a 16 year old girl and I went over to a guy's house two weeks ago. Things heated up and I was in my underwear and he was in his boxers. I was on top and I was grinding on him. He had pre-cm on his boxers. I read about how sometimes pre-cm has live sperm in it. And I don't know, I was reading pregnancy symptoms and it's starting to scare me because i have some of them (Such as bloating, fatigue, backaches, and headaches). I'm really scared and I don't know what to do.