Thank you for your reply, torranceboy. I don't think my stoma is prolapsing because it isn't exactly "rolling out from the inside" like a sock. It seems as if my entire intestine is pushing outward...
I sit on my knees in the bathtub when I change mine. My stoma retracts a little at night because I sleep on my back, so I always change the bag in the morning when it isn't sticking out too far....
I have had an ileostomy since June, 2011. I had to have a surgery to fix a prolapsed stoma on July 4th, 2011, so I now have a second stoma. For the first couple of months, the new stoma didn't stick...