What is going on? I can't taste anything!?

On june 15th I was scheduled for Nasal Polyp surgery. After the first week the nose specialist put his instruments up my nose to start cleaning up the blood clots. Today I went to visit him again and he does the same thing except for it was more painful since he had to go deeper. He numbed the nose even. Apparently my left nostril is inflammed so he gave he prednisone and I have to take it for two weeks before seeing him. After the appointment I went and ate breakfast which I could easily taste. Now its the evening and I have no taste nor smell. Is the inflammation causing this? Help!