If you feel that you have suddenly loss hearing in that ear, you should consult with a doctor at your earliest convenience, as you may be victim of sudden hearing loss.
Please read http://www.masseyeandear.org/for-pa...ation/diseases-and-conditions/sudden-deafness
Sudden deafness sometimes manifests as ear fullness. If it is sudden deafness, it is a medical emergency. You need to begin taking prednisone, and the time window during which it would be possible to help you is very short (as short as 48 hours).