Sore throat with bumps in the mouth

Patient: I have had a sore throat for a week now. I went to the doctor soon after it started and was tested negative for strep. They gave me some “magic mouthwash” for the pain and said nothing else. I still have a sore throat but now have canker sore type bumps on my lips, odd white bumps on my tongue and roof of mouth, and something is wrong with the gums by my two front teeth.

Doctor: