Re: Bitten by my 20 month old, not healing..
So only one baby is biting? You might want to try having her nurse on the other side, allowing the gentler baby to take the bitten side. Of course, that gives you a possibility of getting bitten on the good side, as well! You could also try nursing her literally upside-down, so that she can't reposition and reinjure you.
For wounds in the nipple area, I like a combination of 1% hydrocortisone cream and Bacitracin antibiotic ointment. The steroid takes care of inflammation and the antibiotic takes care of infection. Use a pea-sized amount, mixed and applied using a clean finger.
Coolest thing my big girl said recently: "How can you tell the world is moving when you are standing on it?"
Coolest thing my little girl sang recently: "I love dat one-two pupples!"