Welcome in H.C.M.
I have gone through your query regarding some unusual hanging sac from tonsil
having yellow spot at the summit and bleeds on touching.
I am suspecting that most probably you are having tonsilar infection and this out growth is nothing but infected hypertrophied follicle.
For diagnosis and treatment point of view you should do-
1- Culture and sensitivity of throat swab.
2- Blood- CBC, ESR
, blood sugar (F & PP).
Till the reports are awaited you may take-
a- Tab Paracetamol
b- Anti allergic.
c- Warm saline gargling.
d- Adequate liquid orally.
I hope this will help you but such situation recurs or you does not feel better than consult an ENT doctor for operation.