Here's exactly what the doctor did:

Patient laid on the fluoroscopy table in the prone position.
Procedure Details:
Body area: trunk
Location: sympathetic

Needle size: 22 G
Location technique: anatomical landmarks (Fluoroscopic guidance)
5 mL iohexol 300 mg iodine/mL; 10 mL bupivacaine PF 0.25% (2.5
mg/mL); 5 mL lidocaine PF 1% (10 mg/mL)
Patient was prepped and draped in the usual sterile fashion.
Post-procedure Details:
The patient was observed in the ambulatory surgery department.
Instructions: post-procedure instructions were reviewed
The patient discharged from the clinic in stable condition.

Originally the doc told me he was injecting a steroid. He didn't. The bupivacaine is an anesthetic.

I had my second shot this past Friday, 12/7/18. As with the first, I was told it would take a few days to a few weeks before I noticed additional improvement. A third shot is scheduled for early January "if I need it". If I don't I've been told to just call and cancel. At the end of the month, I have my first visit with my PCP since all this happened. We'll discuss PT at that time. Additionally, if need be, he has found a doctor in the area who is a psychiatrist and a neurologist who treats CRPS patients. The fingers remain crossed!