In this case physical examination is necessary as treatment depends upon colour of fluid from stitchline and need to send pus culture and as per your further history to find exact size and location of cyst and what it contains.. depends on that I can give you medicine.. and see.. all things can be cure with proper examination, diagnosis and treatment... Without proper diagnosis antibiotics will not work.
Next Steps
sonography to see size of cyst and it's contain..
Health Tips
physical examination is necessary for clinical diagnosis