When I followed up with my regular doctor, he suggested that perhaps the initial injection may have swelled up and hit my sciatic nerve
. (He said that if the injection had been directly to my nerve
it would have been quite painful, and I don't recall having pain during the procedure, just gradual numbness.) He started me on a course of prednisone for the possible swelling, and referred me to a neurologist. The prednisone didn't seem to help.