Welcome in H.C.M.
I have gone through your problem, as you said you have bump behind your right tonsil
in the throat may be -
(1) Antrochoanal polyp- as these polyp arise from maxillary sinus
and have a tendency to reach in
throat via nasal cavity
and posterior choana of nose and it hang in throat
(2) Sub Mucosal Lymph
node of lateral wall of pharynx.
It will be better to consult an ent doctor for examination which, seems to be important to reach to final diagnosis as examination findings are here playing key role.