I am so glad to have heard from you two about the obstructions, not that I would wish the blasted things on anyone! But it's so good to know that there are others who've been there too. Techgirl, I haven't had much enlightenment from my doctors on the obstructions & their causes or prevention, except that any trauma to the abdomen, including surgery, radiation, or injury, can result in future pseudo-intestinal obstructions. I can never pass gas when I'm obstructed. In fact, as soon as a tiny bit of gas does pass, I know that the obstruction is resolving. Do you pass huge amounts of stool when your obstructions pass? Not always, but sometimes after an obstruction, I pass phenomenal amounts of stool. I wish the docs could trust us with a syringe full of demerol to inject ourselves when we have these, cuz there's no way to get a pill down when they come on. I had them 2-3 times a month for several years, but they're down to about once a month now at six years out, Techgirl. I do hope that yours will decrease in frequency and severity.