Section yeast infection

So I have a yeast infection at my c section site where my belly hangs over and my doctor prescribed nystatin to put on it. It has been over a week and it has only gotten worse 😩 I’m trying everything I can to keep it dry (fan after a shower, put a dry cloth between it during the day, etc) but nothing seems to be working. A week ago it was mainly localized to the left side of my section but has now spread to the middle and right side and the skin is beginning to break. It is so tender and burns like crazy! Anyone else have something similar and not respond to the nystatin?