I have this weird anxiety. It occurs even though I don't think about it. I can't seem to attend my class because of it. Whenever I'm going to class my throat gets dry, my body gets tense, and I get nauseous. It becomes so overwhelming that I just let it overcome me by not attending class. There have been a couple of times where I have attended class, but even when I'm in class I can't shake it off. It's still there. One time it got so overwhelming that I had to walk out of class and actually puke. It's weird, whenever I leave class my body no longer feels that way and I feel fine. This doesn't happen at any other time except for before I go on amusement park rides, but it goes away during the ride. What could be the problem here? I try thinking of good, relaxing thoughts, but even that gets undermined. I haven't had this problem until this year. I've gone to my classes last year without any sweat. Any explanations? Because this is really bugging me.