Did your GI run a complete celiac blood panel? I know you say you are gluten light, but other things can cause intestinal damage and the blood tests, plus the biopsies determine a CD diagnosis.
You do not have to have any GI symptoms to have CD. You do not have to have any (silent celiac disease). I did not. I ate bread every single day! I presented with life-long anemia. Of course I did have tiny symptoms that were celiac related, but chocked it up to aging.
Chinese food is not necessarily loaded with gluten. Soy sauce, flour to coat meats, and wheat noodles are some examples.
The University of Chicago's celiac website has some of the best information in an easy-to-read form (I would link, but my device is acting up). CD can develop at any time. Pregnancy, stress, surgery, and illness all can trigger it.
Learn all that you can. Good Luck!