Nausea and Anxiety with Collagenous Colitis

Hello! I have Collagenous Colitis which causes watery diarrhea. I take budesonide for it and I've been on and off of it for about a year. Does anyone elsesuffer from nausea from anxiety?? I've been trying too figure out for a year and a half now why I get nauseous and have thrown up way too many times, which is not a major symptom of Collagenous colitis and its been excessive for me in the last year and a half. Whenever my stomach hurts even a little bit or I have to go to the bathroom, I get intense nausea and I panic because of how sick I've been over the past year. My body takes over no matter how hard I try to calm down. I think it's ptsd and panic attacks is what is causing the nausea. I have suffered from anxiety and stomach problems since I was a kid and I've just always gotten nauseous, but for awhile now it's been at an all time high. Does anyone else experience anything similar to this???