welcome in H.C.M.
I have gone through your query regarding your flu, which had developed sore throat
and swelling at posterior part of tongue and to your ear.
after considering your symptoms I would like to tell you that you have acute upper respiratory tract
infection with acute otitis media
Your flu which was initially had given rise to fever and running nose to you later on given rise to sore throat with enough severity to involve base of tongue and extended ear via Eustachian tube (tubular connection between ear and throat ) thus giving acute otitis
media (pain in ear ).
You are advice to go fo thee basic investigations-
(1) C.T.Scan of paranasal sinuses
(2) Culture and sensitivity of throat swab and nasal discharge.
(3) blood sugar (fasting & P.P.).
(4) Blood - C.B.C., E.S.R. Serum creatinin.
Your treatment demands specialist care so you please consult E.N.T.specialist for proper management.
I hope you are now clear about your query.