That really sucks.
I've never even seen a Percocet, let alone had one not work for the pain. Good luck man. The meds are horrible, for sure. T3 and diclofenac were enough to mess with my system, but as long as I had a couple T3 every 4-5 hours it was manageable. At least now I'm on OTC pain meds which are so much less harmful to the system. Hopefully the medical community will recognize that you're a young man with lots of years left in you, and put you back together. Good luck man, and keep us updated. It's a common, shitty situation and the first battle to win is finding a doc who actually gives a damn.