So long story short i stepped on a rusty nail, after around 1 hour i started to feel pain in my foot not around the wound but kinda in my bones dunno how to explain. about 5 hours after the incident i went to visit a doctor and he said that the wound was not deep enough to need antibiotics and that my tetanus shot was up to date, the thing is the pain is growing and is spreading to my whole foot, it feels numb and tingling. it also hurts alot if i move or touch it. What could this be, do i still have tetanus?? please help me.