Suddeny gluten intolerent?

Although i have not been officially diagnosed, I am pretty sure I have celiac disease. Ingesting anything wheatlike at all causes my insides to bloat up like balloon, and I have most of the other symptoms, gas, discomfort, diarhea ect. It's odd to me though because it seemed the intolerance developed basically over a year. Last year, I was still able to eat pizza, my stomach was mildly upset, but now If I don anything near that I would probably not be able to move for days. Can celiac develop this quickly, i just turned 20 and heard it can surface now...what do you think?