I was diagnosed with celiac more than 20 years ago and in the last 10 years have experienced the same thing. I would describe it as pinching pain that rolls sideways, across my abdomin. I also noticed a slight bulge or bubble. I'm positive it's from being glutened, even though I'm very careful.
Lately it has been worse, over a week, every time I eat. Followed by gas and diarrhea. Oddly enough there has been no nausea which is so common for me, and I'm still hungry. Terrified to eat though because it's so painful.
Nice to know I'm not the only one going through this though!