Suggest Treatment For Infection Caused After Laparoscopy For Inguinal Hernia Repair

Hi I am a 45 year old woman who delivered twins 9 months ago, I have since then had an inguinal hernia, had lapo 2 weeks ago started feeling strange, went back for recheck and I have an infection, I have very hard skin and a lot of pain. On penicillin 3 x daily, but this growth of red hardness is not getting better, just larger. Any ideas?