U already have been diagnosed with an infected pre-auricular sinus. Since you have been taking an antibiotic ( Zocef) since 5 days, and your condition has not improved, you will need to change the antibiotic. You can start tab ciplox - tz , one tablet, twice daily for a week. Tab zerodol P one tablet, twice daily for 5 days. Tab Pan -D, one tablet, twice daily for a week. Also appl neosporin powder.
Next Steps
Do remember, the proper treatment for an infected Pre auricular sinus , is complete excision of the sinus, once the I fection settles down.Else, you may keep getting repeated infections and soon you may run out of antibiotics to treat it