What is wrong with me?

I'm not sure what is wrong with me, but since last Friday I have been feeling really sick. Sometimes it's worse than other times, but I feel like nausea after I eat, and my sides hurt (Not at the same time). I also will have chest pain on both sides (also not at the same time), and sometimes it feels like hot, or cold in my chest. It's really odd. It just started happening last Friday. I keep thinking that maybe I have acid-reflux, or GERD, but my doctor hasn't found anything like that. Every time I go to my doctors all of my vital signs are fine. They keep telling me it's my anxiety. Sometimes it gets so bad that I feel like I'm going to pass out. I have problems with swallowing, and my throat feels like it's closing, which I already know that's my anxiety. I get weird little symptoms that are just odd sometimes. Right now I have a cold which is making me feel tens times worse than usual. I just am worried, and think I might need to go into my doctor again, and see if it's something else. It makes life much harder too when my family that I live with is unsympathetic, and can't comprehend what anxiety feels like. I'm also not taking any medications right now for it, and I haven't seen my doctor in several weeks due to me not liking her. I was thinking also that maybe it could be stress too with my anxiety feeling worse since the last week we moved into a rental, and were going to have to move again, and I had my Graduation, and finals. I thought that it was stress at first, but it still hasn't gone away. If any one has any ideas, or advice I would take it in a heartbeat. I don't like feeling like this all the time.