Honestly I feel exactly what you said about the morphine being completely useless. They offerring it to me after surgery, I like don't even waste our time. That stuff wears off in 5 minutes for me at any dose, leaving me cringing in pain for 4-6 hours until nurse come back. I not familiar with your condition but every med you listed spells agony for me. I need horse sized doses of morphine by the gallons. It was designed for battlefields in 1800s. Why do hospitals still think morphine is usefull in pain management? Give me aleeve and spare me the pain and wds from morph. My 5mg oxy doses after surgery turned into 500mg no bs. When you really in pain there not enough meds in the world. Best they could do was a nerve treatment with huge needle hooked up to electric and blast my leg numb for 16 hours. After that I stopped yelling at the surgeons and calling people to come bring me meds. Hope it goes well for you and not such an issue with pain and wds. Theres nothing worse than being in pain and withdrawling and the doctor won't do anything. Wonder why I bring 250 ox's to surgery with me lol.