The other d

Does anybody else have diarrhea as a complication?  I've had it everyday going on a year now and it's completely taken over my life.  It's so bad I can't work and rarely go out because I'm afraid of having an accident.  I had a colonoscopy and upper endoscopy but they didn't show any problems so I'm only guessing but am pretty sure it's diabetes-related.  I take Lomotil, Colestid and Imodium but still have it many times a day.  I recently also tried Lotronex because it was supposed to be a "miracle" drug but it did nothing and is EXPENSIVE.  I've only not had diarrhea like 5 days in the past year and that was because I took tons of Imodium and Lomotil, which I only want to do rarely since I basically feel high when I do.  Does anyone have any ideas on how to cope with this?