Hi, I'm 15 years old and i need some help and information. This may be a little TMI but on 9/15/12 I started my period, the next day 9/16/12 I had sex with my boyfriend and he came in me. Since then my body has been acting very weird. I've had light cramps since about a week and a half after that (which isn't normal), my smell has increased a lot, I've been nause but have thrown up at all, it seems like my breast have enlarged aslo. Today 10/10/12 a day before I'm due to start my next period i started bleeding, but it's a different color than usual. It's a lighter red but not pink. I am very scared and confused right now and would like some advice/help please. Anything will be appreciated. Please and thank you very much.