Nausea is literally one of the most common symptoms of anxiety. Even people without any anxiety problems whatsoever get upset stomachs when they’re nervous. If you have an anxiety problem (which you obviously do), you’re going to have an upset stomach very frequently, because you’re going to be anxious very frequently, and anxious about your anxiety symptoms (the upset stomach) very frequently.
Go back and read what people on here have told you - read it 1,000 times if you need to. Recovery is right in front of you. Or you can keep complaining about how hard it is and stay exactly how you are. Your call.