got a tetanus shot

k so 2 days ago i got a tetanus shot..everything was fine until today..

i noticed at work that there was a nice sized lump on my delt reddish in color..oh well figured its the shot cause i hear these can be annoying but i realized its sore to touch only and its hot in about a 2" circle..could it be infected? i understand i could have reacted to the medicine but 2 days later?
any input would help thanx in advance

It could be but most likley it isn't............. it will def be sore but keep an eye on it and if it gets worse or you start to run a fever go back to the doctors.

Sounds like just a reaction to the vaccine, but keep an eye on it. If it doesn't go down in a day or two, see a doc... preferably the bastard that gave it to you or had it given to you.

Love
Anna