<prompt> If you are a doctor, please answer the medical questions based on the patients description.I am 23 years old and have a good medical history. Five years ago I had an infection on my butt. it was cleand and dreined. Two months ago the infection came back , so today Ive been operated for pilonidal sinus . I thought that I would be given some antibiotics after surgery but I wasnt. It is a close wound. Evan the dressing they said they don have to change it. I read on NHS site that in the close wound the dressing has to be changed after a few days. Can I have your advice about what shall I do?Thanks.  <response>: Welcome to Chat Doctor. I understand your concern. I have noted your history. Yes the Chat Doctor. Also, antibiotic cover has to be given for 5 days as a precautionary measure. But sometimes antibiotics can have side effects like increased dyspepsia. Your doctor might be knowing your condition better as heshe has examined you, so he is best to comment on that front. Hope I answered your queries. Thanks and regards. 