You're best bet, albeit I don't know if this productive telling you this.. would be to get that feeling out of your mind. I too broke my arm, and then once my arm was healed up 7 years down the road and I had no pain whatsoever from anything, I was buying morphine, and then trying heroin on top of that. By the grace of God, I just smoked the heroin, and it combined with the morphine gave me the sweats/chills and from what I gather an overdose... I didn't die that night, but I kept searching... until I found a good source. Oxycodone, which led me to rehab, a year sobriety. Only to relapse around thanksgiving, I just recently stopped taking the oxycodone. I don't feel sick, I'm not going through withdrawal, but that's how every story begins. You continue searching, chasing, upping your dose all for a two hour unproductive high (unless your one of the people that can do things on it) even then your mind will be elsewhere. I'm no doctor, I'm a disabled SoundCloud rapper addict... but what I can tell you is explore weed and its many different strains and terpenes, especially if your in a legal state... and only use opiates/opioids to control pain. Please your life's worth too much to risk it.