Welcome in H.C.M. for consulting.
I read your query and relevant history of your disease as having a lump on the side of neck and at the same time you have also noticed swollen taste buds
on tongue and shifting of uvula
to one side.
All above indicate that you are having some pathology in your posterior part of tongue and reaching up to palate
. this is the primary site and whatsoever pathology is here is draining to lymph
node on the side of neck.
To confirm it you should do-
(1) FNAC from neck lump.
(2) If any lesion is identified on tongue or palate than biopsy
from it be helpful.
(3) C & S of throat swab.
By approaching in above line one can reach to a diagnosis.