I've had a swollen tonsil for about a week- it is slowly getting better but I'm still concerned. My tonsils began to swell the day after I gave unprotected oral sex. I never had a fever or any pain (or any white spots), and my left tonsil was always more swollen. I went to a doctor last week, and he prescribed an antibiotic mouthwash and then penicillin, neither of which worked. I'm now waiting for blood work results. Could this be anything serious?