Hey, I know how you feel. I panic at the slightest bit of Nausea. This past Summer my entire family caught a stomach virus, and I was the only one to not be sick. If there's a stomach virus going around I usually will use hand sanitizer every ten mins. I'm very paranoid about catching something. But I seriously doubt that you will catch it. And I know how you feel about being in school. I have Panic attacks when I go, and I'll do ANYTHING to get out of class. But I try to remember that the fear is all in my mind. And that's VERY difficult. But you can make it through.
Best Wishes.