it depends on which state you live in, in some you can get medical marijuana. although i will say that, despite popular opinion, marijuana is habit forming. and after a certain amount of time it kind of stops working too.
i would also suggest: deep breathing and meditation, concentrating on the flow of your breath, learning how to observe the sensations in your body without judging and reacting to them, tiger balm for aches and pains, valerian/hops tincture to help you sleep, finding stretches and exercises that strengthen other muscles and help you support the parts that hurt (i.e. physical therapy)... acupuncture has helped me a lot. and other types of body work – chiropracter and the occasional massage when i can afford it. i also saw someone for a while who did really gentle movement based bodywork and that was really cool because it helped my body learn how to release things it was tightened around (i.e. old trauma, etc).
honestly, and i know this is hard to hear, but i think the most important thing with chronic pain is to accept it and learn how to adapt your lifestyle so you can take care of yourself. there is a lot to be learned from sitting still and listening to your body, but usually we have too many obligations. after dealing with daily, constant pain for many years, i ended up getting on disability benefits. and now i have time to take care of myself. i still have pain but i don’t fight with it all the time, and i don’t feel frantic about it.
i wish you luck. i know lots of people that take a lot of medication for their pain but that hasn’t been my path so i can’t recommend any…