@katiek78 – You have gotten some good info from other members here. As you can see- everyone has a somewhat different history. You are correct in that your actual illness may not have shown much of itself. You did have irritation in intestines, stomach and esophagus. I had a similar history. Years of testing eventually revealed an unusual scattered autoimmune disease. I think your best plan could be to do more research yourself and then continue your search for another GI. I ended up at Mayo- you could consider going there. They are extremely thorough.
I agree that we all have different histories. I ended up having all my procedures done at the University of Minnesota MC and was very happy with the care I received.