Yeast Rash

Hi moms,

Does anyone have any remedies for a yeast rash? My baby has had it for 6 weeks and it's like it keeps getting worse. It started off small only on a small part of her vagina, now it's all over the front and back. We've been to the doctor twice because they said it should take a few weeks to heal and we were prescribed Nystatin the first time and Clomatrizole(or whatever it's called). I don't know what to do and going to the doctor is not helping. Someone please help me.