Ouch! That doesn't sound too good. I really think what Em suggests is a good idea:

I've had a bite which drew blood and honestly the best thing I did was left it alone and just put breast milk on after a feed and allowed to dry. I'd be not putting anything else on it and just wait it out and feed through the pain unless its showing signs of infection.
BM has all sorts of good things in it and it has natural healing properties.

Hope it clears up for you soon hun.