did your pain ever go away?
I had this happen last week and the pain is still there. Same exact thing, except mine is from my armpit to my thumb. I am worried that it will be permanent. Your experience is very helpful!
Your course of action is to get an emergency squeeze-in appointment to see the DOCTOR at that office (of course not the nurse who drew the blood), and tell him what happened. A similar thing happened to a relative, only their arm turned blue and red and swolled and horrible, so a vessel was injured, and the doc was able to explain it and treat it. After your doc explains how a nerve must have been hit (I think that's what he'll say), if he doesn't offer some sort of (a) pain or steroid medication and/or (b) sleep medicine, then ask for it, but he'll probably suggest it on his own, and he MIGHT refer you to a neuro doc, I'm not sure. In the meantime, put your arm in a makeshift sling from a pillowcase and keep that arm bent across your tummy, so you don't keep setting off that shock. At night, you can wrap it around your body to hold it bent. Alka seltzer is good for pain and sleep.