 [ Symptoms ] what is hepatitis c [ Disease ] i really have no way of offering you a patient specific answer since i cannot review your medical records or examine you there is a possibility that you did not have a bacteria that would be susceptible to penicillin you may have a viral infection prolonged sore throats can even be mononucleosis mono or due to the post nasal drainage associated with a sinus infection it would be best to see your medical provider again for a reassessment this is really the only way to know what may be causing your continuing symptoms