Help with yeast infection

So I’ve had a yeast infection and it’s been on a off since September. This is my first ever yeast infection. I’ve taken 4 diflucan pills since September and was on a anti-fungal cream. I’m going to the doctor’s in a few days for a Pap smear and to let my doctor know I still have it. I’m so confused as to why this is still ongoing. There’s been no major change to my diet. I drink plenty of water. I do drink soda and coffee occasionally but it’s always a little bit. The reason I got the yeast infection was from a feminine wash which I stopped using immediately when I got the infection. My doctor let me use monistat with another round of diflucan but it only helped a little bit. I take probiotic supplements and have eaten yogurt. I do not have sex either