The past 4 years i have had really bad nausea/anxiety and im always nervous for some reason, its really bad when i get in cars or when its really quite, its so bad i had to leave high school, becuase i couldnt sit in class with out feeling like i was going to throw up. When i feel like i am going to i NEVER do but come really close, ive been to my docotor about it and they said its nothing, but it has to be somthing, any body with any ideas or advice?