Noted that you are a 19 year old female and have one tonsil larger than the other and have tonsillolith
that is tonsil stone.
Tonsillolith causing enlargement of one tonsil is rare to know.
The causes can be hyperplasia
on one side only and hence must be investigated.
I would advise you the following in such a situation:
Consult an ENT Surgeon and get examined well including whether there are lymph nodes on the same area where the tonsil is enlarged.
Get the blood tests done.
FNC of tonsil if can be done can helps.
Ideally a 2 week course of an antibiotic and an anti-inflammatory medications should be tried to see the response.
If the enlargement persists then you may need a tonsillectomy
and send the tonsils for histopathology to see whether there is any Lymphoma
Hope I have answered your query. Let me know if I can assist you further.
Dr. T. Chandrakant,
ENT & General Surgeon