I am adult that was diagnosed with Celiac two years ago. However, I was told gastro issues are on the rise in the U.S. There are theories of Residue from crop pesticides, over processed foods with added preservatives, and GMO’s. Covid definitely creates internal havoc and is another log added to the fire of stomach woes. Your post is dead on and exclusion is how you feel. My office provides bagels, I have to bring my own. If the office orders a pizza, I either have to order a salad or, once again, brown bag it from home. I can’t imagine going through this at 13. I am hopeful, in the years to come, there will be gluten free restaurants (no cross contamination) and Bakeries.