There is a whole list of things it could be, some of them serious, so please, PLEASE, get yourself to see a gastroenterologist as soon as you can get the appointment. Ulcerative Colitis and Crohn's disease are both forms of Inflammatory Bowel Disease. Ulcerative colitis causes inflammation of the interior lining, and Crohn's causes inflammation throughout.
There is also infectious colitis, antibiotic associated colitis, irritable bowel disease, diverticulosis and diverticulitis, as well as bleeding ulcers.
Listen, I don't want to sound like a fear monger, or make you freak out, but several of these conditions can eventually cause a perforation of the bowel, which would spill fecal matter into your bloodstream and cause sepsis. You've already waited months. Please don't wait any longer.
at 4:18 PM on Nov. 16, 2008