genetian violet does work very well - if it's a nipple infection you have to treat yourself and that baby otherwsie you will keep passing it back and forth to each other.
i would also recommend supplmenting it with the probiotic yogurt in any case b/c it help restore your body's bacterial balance...yeast thrives when you don't have the good bacteria around to keep it in check. we all have yeast, but a yeast infection happens when there is way too much of it! i struggled with yeast infections for 4 months after having my daughter.
i would also seriously recommend seeing your dr about this and be treated with an anti-fungal.