Blisters On Throat Pictutes What Is Wrong With Me? I Have Sore Throat, Fever, Aches, And Blisters Covering My Mouth And Tounge?

What is wrong with me? I have sore throat, fever, aches, and blisters covering my mouth and tounge? - blisters on throat pictutes

I am starting a 19-year-old at my job for the summer, after Memorial Day, but I fell ill last Tuesday. The doctors said there was no pharyngitis or mono, and put an antibiotic for 5 days and Vicodin for pain. The fever lasts for 5 days and the blisters / ulcers in the mouth are worsened possiblly what could be the problem?