I have a cough, swollen tonsils, white patches on back of tongue near tonsils. neg. strep test after sore throat 3 wks ago, took penicillin. ?

Tonsil: May have a PCN resistant bacteria or a secondary yeast infection.

Sounds Viral: White patches on tonsills are often a sign of bacterial infection HOWEVER they can occur with viral infections and they can simply be CHRONIC ! Infectious Mono is also a possibility.A simple blood test ( White Count, Heterophile antibodies) may be helpful! Hope this helps! Dr Z