Hi: I m a 53 yr old female/5 5 /140 lbs/ allergy to PCN I ve been dealing w a very deep facial cyst around my right nare extending approx 2 to right cheek since Jan.1 my most recent dermatologist (who I think is very good) put me on a 2 week regimen of minocycline 100 mg BID for a Cx that grew enterobacter (I m starting week 2), vinegar soaks, & mupirocin ointment. She injected the area w cortisone w good results approx 1 week ago. However, now the cyst has reopened, draining & expressing white pus & serosanginous fluid, very red & swollen. Is this just the Abx at work or perhaps something more serious? No fever. Thank you for your time.