Hi and welcome to HCM
is the choice of treatment for some chronic cases. But it depends on the size of tonsils and its frequency of re-occurring. If you are facing this problem again and again and you are in pain than go for it otherwise go for symptomatic treatment.
Now, lower grade fever
may be due to tonsillitis
but don't forget the other cause like Typhoid
fever which is more common now a days. Both of the diseases are treated by a course of Antibiotic and other symptomatic treatment. Consult your Doctor today and have a specific treatment.