Its' been a long time since I've logged into this site. When I saw this topic I felt I had to reply. I've been off of gluten about 5-6 years. I was doing really great, but occasionally felt something wasn't right. One morning woke up with hives from head to toe. I went to the hospiital and they said to see an allergist. I made an appointment and went to the allergist. They did the testing and I did not show any signs of allergies. The sent me back to the waiting room to wait to see the doctor, and while waiting for the doctor, I broke out in hives all over my chin. The doctor called me to the back and told me that I was allergic to something but told me he couldn't tell me whet. His exact words were, "Well, we know you are allergic to something, so keep doing what you are doing and you should be ok." So, again I took things into my own hands and started an elimination diet. I found out that I was allergic to white potatoes(and all potato flours) and all corn products.
I thought I was cured when I found out that I had Celiac (officially undiagnosed by a doctor) then I started with these new allergies. My point is, try an elimination diet and you might find that you are having issues with other foods as well. Never in a million years did I ever think I would develop other allergies while being denied gluten. Unfortunately I was wrong. However, I have managed to find things that I can eat. Hang in there it gets much easier as you go.