Not quite a week ago I had woken up and felt incredibly nauseous, and the thought of foods and smells made me sick. This lasted for about an hour. I am and have been sexually active with my boyfriend for about 5 months now. Recently, I woke up at about 5:30 a.m. with bad abdominal pains, I had light diarrhea and felt hot, and had the feeling that I was going to pass out. (I have passed out before so I know that feeling) I also have been having heartburn daily and I am getting concerned. What is wrong with me ?