Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concern..
As per your complain Yes, it can be a
Peritonsillar Abscess and it can cause
severe pain in throat and inflammation of one or both the tonsils.
Antibiotics once stopped taking can not keep working for longer period of time as they have a definitive period [half life] for which they are active in the body..
If they are no more being taken the infection can recur again if it is not completely resolved..
I would suggest you to consult an Otolaryngologist and get evaluated and a thorough clinical evaluation will help in diagnosis that whether it is Peritonsillar abscess or
tonsillitis..
Once the cause is confirmed treatment can be done accordingly..
In case of Peritonsillar abscess if it is not resolving with medicine
incision and drainage can be done and in case of recurring conditions
Tonsillectomy that is surgical removal of tonsils can be done..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.