In my experience, waiting for doctors appointments and test results is the hardest part of getting treated. When I was told I had a "brain tumor" (inaccurate, but verbatim) after a year of waiting, I actually smiled. I just was happy that finally something was happening.

Best of luck to you, but until they find something definitively, mind your sanity. Don't get too excited and wrapped up in Celiac yet; it might be the wrong diagnosis. Each time you get a wrong diagnosis, you drop a little lower. Being invested in a particular diagnosis and then having it be disproven is more like a free-fall.