C.C.
Oh, honey, I know the answer. I suffered for nine months with thrush, tried everything from nystatin to gentian violet to diflucan.
Buy a gallon of white vinegar. In a bottle, mix one part of vinegar with five parts water. Using a cotton ball, dab it on your nipples (I'm starting with this first, since it will give you IMMEDIATE relief). Drench them if you like. It won't hurt. It won't stain anything. And it will feel cooling instantly.
Right before nursing, and right afterwards, do the same ritual. It won't taste particularly fantastic to your little one, but she'll drink anyway. Then, once you've drenched yourself, take a cotton swab (Q-tip) and rinse the inside of her mouth with the solution. She won't like it either, but it won't hurt her at all, I promise.
I had relief within minutes. And after dabbing several times, the pain was almost entirely gone. Fungals are hard to get rid of, though, so keep using the solution with every feeding for at least a couple weeks, then keep it on hand, so that if you feel even a twinge of pain, you can instantly cool it. I've told this to several women on Mamapedia, and they all write back and tell me it worked.
Wash your bras the laundry with a cup of vinegar in the load. And be sure to tell your doctor--and make sure your doctor tells every other doctor he/she knows. Nothing works this well, but Diflucan is expensive, so its pharmaceutical reps are going to push it. But this really works, I swear!
I feel for you, for I still remember that horrible pain. Try it right now if you can. You won't regret it.