I have stage III endo, with the worst of it being down the bottom of my bowels, and I get the WORST gas, very painful, and a lot of it. I've tried changing my diet heaps, I've even had a colonoscopy
and 2 gastrocopies. My gyno almost laughed when I told him I had those procedures, he said it's definately my endo. I also have very irregular bowel movements. Switching to lactose free milk and cutting down on cheese and acidic foods has helped the TINIEST amount, but not really.