I got the first moderna shot 12 days ago and my shoulder, neck, and jaw on the side I got the shot has been messed up ever since.  I figured it was normal and expected it to hurt for a few days but 12 days out and it has not gotten better.  I have lost a huge amount of range of motion in my arm.  I've been heating, icing, and take pain meds regularly for it and nothing.  Today on day 12 it feels worse than the last 10 days.  The injection site itself was a huge welt for a good week and hurt quit