I have the same thing. The only thing that helps me (now I have severe stomach cramping, pain in the lower back, pelvic pain, cramping in the legs, bloating, frequent urination), is knowing that there are SO many things that can cause the same symptoms.
Yes, my hypo brain tells me it could be pancreatic cancer, colon cancer, stomach cancer, ovarian cancer, what have you.
But it could also be a parasite (gross, I know, but very possible because one of our cats had one and I was never tested), irritable bowel syndrome, crhon's disease, a bladder infection, it goes on and on! And how amazing would it be, if it could be easily treated? :)