Day before yesterday I accidentally stepped on an exposed two inch rusted nail that went through the sole of my shoe into my foot. The hole bled for a little bit and then I went to the hospital and took a tetnus shot. My foot is recovering and there is a swollen lump on my arm where the tetnus shot was given. Is a swelling normal in case of a tetnus shot? Any further suggestions for my foot? Am I still having any harmful or dangerous infections? Thank you.