I had a tetnus shot on Monday.  Didn't feel more than the prick of the shot, but late on Tuesday the muscle in my arm stared to work.  I was ok with that as I was told that would happen.  However, on Wednesday my armpit started to hurt.  Now on Thursday, the spot where the shot was injected, is red and swollen and my armpit is swollen.  I was given the shot in my left arm.  It's Thanksgiving day so I can't just call my doctor.  Anyone know if this is normal?