Thanks for writing to health care magic.
I can understand your concern.
The organism may be resistant to that particular antibiotic. So a culture and sensitivity should be done to identify the sensitivity of the organism. Depending on the report the antibiotic should be changed.
Do you have any fever
etc which could be signs of infection? Why was the investigation done in the first place? What are the problems that you had initially?
Continue to ask further queries as required.
Hope this helps.
Dr Y V Siva Sankara Murty
Associate Professor of Pediatrics