Thanks for writing to H.C.M.
I have through your query regarding facial pain
& pressure along with headache and blockade in ear and fluid leakage from ear.
As per your symptoms it appears to be eustachian tube blockade with secretory otitis
media. As your ENT doctor says that your sinuses are ok means there may be infection in your pharynx.
You may need these investigations-
(a) Pure tone audiometery.
(b) Impedance audiometry
(c) Culture and sensitivity of ear discharge
By inferences of above investigations and there clinical co-relation with examination findings one may reach to correct diagnosis which may be accordingly manage.