Hi thanks for your question.
The hole on left side with puss ball could be pharngitis(inflammation of pharynx) or it could be early tonsilitis
.You need treatment for pharyngitis
as well as for tonsilitis.The treatment for recurrent tonsilitis is tonsilectomy.I would suggest you to consult an ENTsurgeon,who may be able to examine you,may treat your pharyngitis and may remove your tonsils,if needed.
Hope this answers your question.