After Being Treated With Lamisil And Ketoconazole Without Results, Another

After being treated with Lamisil and Ketoconazole without results, another physician (a plastic surgeon that did an elective surgery) prescribed Mupirocin for what she believes is a staph infection around my mouth. In a weeks time there is an 85% improvement, but the inflammation is still persistent. I wonder if I should also be started on oral antibiotics. I am discharged from the plastic surgeons care so would have to follow up with my PCP. The first available dermatology appointment is not until Jan. Please advise.