What Causes White Discharge With Inflammation And Itching?

I have a white film on the inside of my vaginal lips that itches and it also burns when I urinate. I was on antibiotics so my doctor prescribed Diflucan for three days over the phone without seeing my vagina. what could this be? (Background) I a'm 5'2 124 lbs and I am being treated for: at least 2 periods a month, an arachnoid cyst and chiari malformation