stomach virus for 2 days in last week of august. Thought I was over it but for approx. 2 months I have had constant nausea and vomiting. was tested for h.pylori and it was negative for that. been to doctor 5 times. doc has given me vibersi and it just makes me sick to take it. nausea and stomach discomfort, bloating. Lost 10 lbs. no blood in stool. nothing showing in colonoscopy in late spring. had to be off way too much work. can nerves cause this? I am a diabetic, but my glucose levels are consistently below 150, usually around 130.some constitution but I figured because I can't eat. Is there another test I should ask for.