I am so sorry to hear that. I know what you mean when it won't go away. In my case I started to have anxious throwing up episodes when my 2nd child almost died at 6wks old. This has been 15yrs and being told by doctors that its anxiety and worry. I wouldn't accept that answer alone. I kept researching and thought maybe Thyroid. Tested above normal so I finally found a doc that would let me do a 3month trial period of a thyroid med. I didn't notice much of a difference. i kept questioning things and had an allergist do food allergy tests. Come to find out I was severly allergic to Milk, Beef, Eggs, Corn and borderline Wheat (gluten), oats, peanuts. I had an anaphylactic reaction to the food shots since it was the actual allergin, I almost died. It was awful. Then my brother said they can do a blood test that is cheaper and they can test for hundreds of allergins. Some can be enviornmental (dogs, cats, pollen etc..) i am also allergic to bees, wasps, honeybees. My mom and 2 brothers and sis have enviro allergies 2 of them get shots weekly. There are no known shots for food allergies that I know of. It is the elimination diet. Extremely hard. Takes double the time to read all labels at the store, but I have lost some weight and I do feel much better. I still have anxiety about getting sick and not being able to take care of my family, but the worry is less. I do take xanax as needed and ambien for insomnia. My other fear is public speeking. I hate to be the center of attention. I get physically sick. In high school I used to throw up if I hadn't studied for a big test, the first day of school, if I knew I was getting a good grade and my parents were going to see it. I don't stress AS much, usually about making the bills and my health are the issues. If I don't laugh sometimes, I'd cry.
Sorry this is so long. I hope you can find the answers for youself and feel better!!!