Often times when I'm under stress I get dizzy, shake uncontrollably, have nausea and now I vomit. I never had this problem before I developed IBS. I now have my IBS under control by eating small meals and taking immodium, but don't know what to do now. Do I go to a GP or a shrink?? I missed an important game today that I payed $51 dollars for, and I'm shocked it wasn't D that did me in for once- it was the vomiting and shaking which I know can't be IBS.I'm confused!