Should I stop Nystatin and ask my doctor for a medicine in tablets such as Fluconazole?

Hi, about 4 weeks ago I got a taetka in the esophagus I started vomiting with 10 times the food content was returning again to the stomach, I irritated the esophagus and resumed reflux monstrous burning in the sternum of pain in the cage, sour mouth, white airstrike on the language looks like a map, burrowing and overflowing in the abdomen, I got medication for reflux after about 2 weeks the burning in the cage began to pass but not quite , I went to the doctor with this roasting of the mouth and said that the athlete gave nyststyne the first two days was ok for 3 days terrible burning in the mouth and esophagus after nystatin, I stopped for a week I started a diet , I went back after a week to nystatin I took once and the same, or I should stop taking the drug and ask the doctor for a drug in tablets for example fluconadol. Is it possible that it is through this reflux and irritation that I can not use this nystatin?