I'm so sorry, I did not see this until just now. I want to offer you support and tell you it will get better!! The way I know DS is teething is that my nipples become teething toys. He has punctured them, gnawed on them, had horrible latch, you name it. My nipples are raw, bleeding, and injured when he is teething. Something about the way he latches just makes it even worse. I've had wounds that take a while to heal, but eventually they do and we get back to normal. Lots of lanolin, breastmilk on the wound, airing them out when possible, and ibuprofen have gotten me through.
Also, a couple of months ago he slid off my lap while nursing and took my nipple with him. I had a ginormous gash. It was seriously gushing blood, and DH just about passed out when he realized what happened. It took a couple of weeks to heal, but it did.
Hang in there! It will get better! You do have boobs of steel! You are an awesome mama for going through pain to provide your baby with what is best for her.