I’m a little worried

I am 16 years old and have been in a relationship with my 17 year old boyfriend for a year and a half. Anyways, we had unprotected sex on August 5th and my first day of my last menstrual was August 26th. He didn’t cum and he was never inside me, but I am still a little worried because lately I have been having sore breasts and the veins are pretty noticeable. My stomach has been upset as well. I am only worried because if I am pregnant then my baby could be in danger because I am bulimic and I also take caffeine pills. Also, there are a lot of genetic diseases that run in both my boyfriend’s and my family. I am just looking for some imput on what you all may think…sorry if this was a little bit of too much info for you…