@harleymama
So sorry for the horrible pain you are living with.
Have you talked to a physician about getting a pain pump? Since you have so many limitations, this might be a good choice since the amount of medicine that goes into your body is a lot less than injections and oral meds.
I certainly don't know your financial situation, but have you thought about going on SSI? You would start to collect social security and you would also get Medicare (and Medicaid if you need it).

I hope you find an answer soon!
Ronnie (GRANDMAr)