Exercises when you have prolapsing colostom

[don24mango]

Hello everyone, I have a colostomy which was fine until I tried some yoga. That led to prolapse which subsided but since then it prolapses quite easily and frequently. Even blowing my nose too hard. I am trying to find exercises that will not lead to prolapse but without success. I understand walking, am looking for maybe light abdominal or weights. It's tough because even the elliptical seems to generate ab pressure and it pops up. Many thanks, Don