Detectiveness

Hi guys! I'm going into detective mode. No I haven't been watching too many forensic type shows - well yes I have but that's not why. For the last 3 weeks I've been having digestive tract problems almost every day. I'm still eating clean and have been for several months. Nothing changed recently. But ever since the day I landed in the ER with cramping and other symptoms I've been almost constantly nauseated with cramping mid-belly. I wonder if I've got an ulcer. I'm going to the doctor after I've kept records of the episodes and what I have eaten so I can see if he can detect a pattern. My mother had celiac and I haven't been tested. I should go gluten-free for awhile to see if that changes things. Here goes...