Sever sore throat with white puss not strep

Patient: I am having extreme pain in my throat,coupled with a lot of white pus and a ulcer on the left tonsil. I went to a med express and they said I did not have strep? Virus? Motrin will lighten the pain for a short time, I don’t know how to get rid of it? 3-4 days now?

Symptoms: Pain in throat. Hard swallowing,puss around tonsils Fluid in left ear