Hi, AMK, welcome to the forum. I'd suggest you find a good pain management doctor once you get insurance. They can help you find out what is causing your pain and give you assistance on how to control your pain better. Sounds like you need some blood work done to rule out rheumatoid arthritis, lupus, lyme disease and the list goes on. Good Luck and keep us informed!
I haven't been on narcotic pain killers long enough to give you advice but I take a extended release morphine once per day with oxycodone for break through pain. The extended release meds are nice cause you don't get the ups & downs through the day or run out through the night which was an issue with me.
DDD, osteoarthritis, fusion surgeries C-5/7 & L-4/5 both in 2006, torn meniscus left knee 2000 & 2002, buldging disc L-2/3