I have had tetanus vacinations as a child but none recently (last 10 years or so). In February a dog bit my left wrist. Whilst it did not bleed massively, it was fairly deep and has left an indentation and a scar to the skin. over the last few weeks my arm has started to ache. The forearm and upper arm aches constantly and it doesnot matter what i do it does not lessen the ache. Sleeping is difficult and when i wake it has shooting pains the most. I have been taking paracetamol wihch dulls the main but it is not going away. Any suggestions please??