Chocolate

Hi, I have recently been diagnosed with Celiac disease. I still don't have the diet down, seems I am constantly finding gluten hidden in foods, cross contamination, etc. My stomach always knows within 15 min. I have been eating chocolate pudding (Kozy Shack), choc Chex cereal, chocolate candy bar, all are gluten free. But, within minutes my stomach starts growling, bloating, and then of course diarrhea. Does anyone else have a problem with gluten free chocolate?