If it wont stop Frey, you need to go the Doctor. Its serious you might even need a tetanus shot.
Do us all a favor and go see a damn doctor, Frey'.
(I'm working on a sig' for somepony and I look at "Octavia" and go "fuck that's spelled weird". I should really get to sleep soon...)
The bite itself does not cause tetanus but it allows a break into the skin that can provide the tetanus bacteria ("Clostridium tetani") with a way to enter the body.