After eating pizza, after eating pie, and after eating an ice cream cone. Each one i've been having stomach pains. like i'm going to throw up, but i never do. i can pick the toppings off the pizza and eat them and still feel fine afterwords. i was eating pretzels the other day and my stomach started hurting after that too! if i watch what i eat then i'm fine, no stomach pains, but if i eat anything with gluten in it, the the stomach pains come back. but the pain isn't right after i swallow its like 10 to 15 min after i swallow. i think its celiac disease but my mother thinks not.