Hi
With your query, it is mandatory to know the cause for the pus formation till then which cannot be treated permanently. As you mentioned you are on antibiotics hope they were prescribed by a dentist otherwise unnecessary use of antibiotics is not recommended.coming to diagnose your problem I must know whether the abscess is of periodontal or periapical origin or just ginguval origin.if it is gingival origin I suggest no need of drugs. If it us periodontal origin one must thoroughly check your overall periodontal health whether is there any pocket formation that often leads to an abscess if it is pertaining to a particular tooth then is there any caries? So all these are necessary to be ruled out and then start the treatment which is permanent better consult the near by dentist.hope this will help you