What Causes Red And Burning Vagina With Milky Discharge?

Hi , I had vaginal redness and burning for almost 2 years , some time it comes with a milky discharge but most of the times its just burning and redness , i have never had itching , its all burning and redness I went to different doctors and specialists and have done several tests and all of them shows normal. I tried several times fluconazole , cloterimazol , lotriderm, triamcinolone and no one works for me .