The good in all that is that your doctor has tested you and is treating you. Your diet will be the main issue. Then your support in the way of nutrients, supplements, vitamins and medications.
I was never tested for gluten/celiac. I was found to have gallstones, ulcers, migraines and IBS. Oh, almost forgot reflux. As soon as the xrays were read and reports written, I was given many prescriptions and a xerox copy of some diet to follow. With the bill ; /
Truly, I feel my main culprit was possibly a system wide yeast infection, but no doctor would consider this. So I changed my own diet. All organic. Now gluten free and no genetically modified.
I will not touch any grain. Sugar. Or those items that contain them. No alcohol at this time, too. Gave up cigarettes. Switched to green teas. It was a major life change.
I have been symptom free since 2007.
My hope is that you give yourself time to heal.
Don't let your guard down. It is not easy, but you are not alone. Take care.