They make hernia belts that are specific for people with ostomies. The manufacturer is NuHope.
http://www.nu-hope.com/beltlit.pdf This is a PDF file to their brochure.
Gerry - You are right. Having abdominal surgeries puts us at risk for hernias. I'm sorry for all that you have gone through.
I hope that you are on the mend and doing much better.
Are you taking anything for the constipation? I have found that MiraLax works great and isn't harsh on my system like other laxatives.