How are you now? What helped? I had the vaccine on December 1. Extreme pain from mid bicep into forearm started on the 9th. EMG fairly normal. Getting US of the area in 2 days. Then an MRI of Brachial Plexus. I’ve lost the ability to be able to bend the 2nd knuckle of my thumb and to pronate (turn inward) my forearm. So writing and typing are very difficult. I was just put on very high doses of steroids. It’s been horrible living like this. Really taking a to on my mental state!