An endocrinologist diagnosed my Celiacs, my presenting symptoms were hypoglycemia and seizure disorder. He put me on a "grain free/sugar free" diet. If your intestines have been heavily damaged by Celiacs it will take a long time to recover fully (if ever). Perhaps you have leaky gut going on and candidiasis - which will make you feel terrible! Might be a...
The best worst I've ever had a doctor say to me was from a Neurologist.
"Could be a brain tumor, could be a panic attack, won't know til the 2nd MRI" and then walks out of the room.
I paid $300 bucks for that (by the way, that's all he said to me) - turned out to be a lesion.