what'd the doc prescribe for her? nystatin? if so, don't be surprised if it doesn't work. yeast thrive on sugar, and if you check out the ingredients of the nystatin liquid, i'm sure you'll see the lovely "ose" ending on one of those ingredients. "ose" = sugar.
so the doc prescribed you both abx for the mastitis and diflucan for the thrush? the diflucan is good, as long as he/she got you a nice strong loading dose, and has the rx last for a good long treatment. the abx, well, that usually makes yeast worse....remember, antibiotics kill of the bad bacteria that is causing an infection, but it also kills off the good bacteria that keep yeast in check.
your other option is to use gentian violet on both you and the baby. just don't schedule professional pics for a couple of days, because the lil one's mouth will be a gorgeous shade of purple
