Thanks for consulting H.C.M.
I have gone through your query regarding cold
and popping of ear and ultimately feeling of plugged ear and loss of hearing. As you are saying that you are taking antibiotics for last 10 days and in your early life you were prone to ear infection
and tubes had been put in your ear in your paediatric age. Now whenever you are blowing your nose you feel click sound and ear becomes loght but soon after it plugged again.
your history of illness is in favor of eustachian tube dysfunction
with secretory otitis
media. You are advice for these basic investigations-
(a) Pure tone audiometery.
(b) Impedance Audiometery.
After this a thorough examination and clinical co-relation of inferences of above investigations one may reach to a correct diagnosis and that may be accordingly manage.