I stepped on a rusty nail outside, went right through my croc and into my foot. OW! I am going tomorrow morning to get a Tetnus shot because I cannot remember the last time I had one. I looked all over online but cannot find the answer to my question so I came over here hoping someone would know... Where do they inject the Tetnus shot? PLEASE tell me it's not in the hiney... I HATE needles, I'm scared!