For the past two months, I have had a terrible sore throat that will not go away. I have been put on antibiotics twice since this began, and they help while I am taking them. But within a few days of being off the antibiotics, the sore throat comes right back. I don't have a cold or any sort of nasal thing going on. There are white spots in the back of my mouth, but the tests came back negative for strep and mono. Any idea as to what this could be? Thanks!