If I were you, I would get a second opinion from a neurologist. They are more educated on nervous system issues like rsd than pain management drs. PM drs are actually drs of anesthesiology. It can't hurt to get a second and maybe third opinion.
I never got the SCS trial even because my neurologist and gp were so against it. My pm dr pushed for it for about a year but I said no and finally started seeing another pm dr who pushes exercise and gives me meds to help me with my rsd pain. He is more conservative and tries to even keep pain meds to a minimum. I like him much more than the other dr.
Some people have liked the SCS but it wasn't for me. Everyone's different. You have to make your own decision, and whatever you decide, I hope you feel better soon. My thoughts and prayers are with you. From your friend, Renee.