Hi again everyone,
Thank you all for your support! I finally got my test results back. They were positive for Celiac Disease.

A disease that makes it so you can't eat gluten

which is found in wheat, rye, barley, and often (because of processing) in oats, along with a bunch of ingredients that don't actually tell you that its in it. While I knew this was a distinct possibility as a result of the tests, it is a whole different thing to be knocked out of my denial and actually have to face reality. I didn't really understand what it would mean and I learn a little more each day.
Thanks again.