I was given a tetanus shot combined with some other vaccines.My arm hurts at the site of the injection. Almost like the fluid that was injected is stuck in my muscle.

How long ago did you get the shot, many hurt for a few days,

I had the Tdap shot last year. I couldn't lift my arm for two days :(.

Yup, that's a painful shot. It can take several days for the pain and discomfort to subside.