I had my colon removed back in Aug. 2008 and I also had my small intestine connected to my rectum. The answer to your question about the stomach rumble, your belly rumbles because the small intestine since it is no longer being held up by the colon and is able to move more freely. The rumble is the small intestine moving around. it happens to me all the time, especially for after I eat, since it does alot of moving while it is digesting. sometimes too my small intestine moves around while I am laying down, so I always have those rumble sounds. As I started to feel that area more, I also feel it move around sometimes as well. As for the gas, I usually do not have gas problems, so I would not know what to do, sorry. But I hope this answers your question about the tummy rumbling. Well, welcome to the board and it is nice to meet you.
Rectal Prolapse Surgery: December 2006
diagnosed with slow transit constipation: June 2008
total colectomy with ileo-rectal anamastosis: Aug 7, 2008
Numerous food intolerances (gluten,lactose,msg,etc)