Sorry to hear that, TE Marie. Hernias are something we all fear. I've not had one (knock on wood). However, if you use Facebook, there's a group called "The Real Ostomy Support Group", which has been enormously helpful to me in many ways, and I've read of many people there with hernias who either have had surgery, or are looking for other help with hernias (including belts). It's a closed group, you need to request approval to join. You might get some additional responses from those folks.
As an aside, I had my stoma revised (unplanned, done during pouch removal), and the new stoma is miles better than the original stoma. I hope you get similar positive results!
Good luck, I hope you keep us updated.