I had a complete physical 8 days ago , at the physical i recieved a Tetnious shot , 3 days after the physical I have found a lump the size of a ping pong ball under my armpit. it is not painful and it is solid ,like it is not moving about . I have read a little on line and one of the things I saw was that your lyphnodes can get swollen after a imunization , so i am thinking it might be a reaction to the shot ...any thoughts?? anyway if it does not clear up in the next week or two I will be back at the doc