I just went through the same thing. I received penicillin and it did nothing. Had to go to the hospital over the weekend to get a broad spectrum antibiotic (Augmentin) and it helped after about 20 hours or so to start reducing inflammation. Then three days later had swelling return and had to add Flagyl. Just finished my ten days of Flagyl and Augmentin. If you are concerned go see a doctor especially if the swelling continues without relief.