I'm curious, has a doc told you that your problems are b/c of fentanyl or suboxone use? I hate that you are having to go through so much pain, but I've used both. Abused fentanyl and using suboxone for opiate addiction. I have horrible constipation, but I've always had that problem and I've learned that not allowing myself to wait 2 weeks between bowel movments helps. My sister died from complications from a ruptured bowel and I really do sympathize with you. I'm not attacking you in any way but it is in my honest opinion very irresponsible to come here and blame your health problems on your use of opiates. Lot's of us out here and I doubt most of us are having your issues. I would almost bet that there was some underlying issue and at worst the opiates masked symptoms that may have tipped you off that something was wrong.
I hope you find some relief and some peace. I will keep you in my thoughts and prayers.