Well, you shouldn't be worried about anything like an STD. perhaps you'd need something like a tetanus shot. which, would be extremely important if the needle seemed to be dirty, or rusty. so, firstoff, tell me, was it rusty in any place, or seemed to look old, or dirty? If so, I'd like to post a website containing information about Tetanus, if that is something you have to watch for,
The above website is merely about Tetanus, which would possibly occur if the wound was inflicted by a rusty/dirty/old/uncleaned needle, or if something such as dirt, got into the wound.
Here are a few good websites with information about puncture wounds:
http://www.ncemi.org/cse/cse1015.htm (note, this website provides information for a foot puncture, but the same "what to do" steps can be used among your puncture site)
I hope you feel better! <3 goodluck. and be sure to tell me how everything goes! :D