Well, you seem to have a peculiar situation where you cannot meet a doctor! I can just help you by giving you some understanding about hearing loss
. There are two types of hearing loss. One is conductive deafness
caused by conditions as simple as wax in ear and due to various middle ear problems (which usually has other associated symptoms such as discharge from ear if infected). The other is sensorineural deafness which is due to problems in inner ear
and beyond in the nerves going from ear to brain.
Ideally you need to be examined and few tests have to be performed. At this stage, if you decide to only wait and watch, I would suggest few precautions. Stop any self medications as there are many medicines which could affect the nerves. Avoid exposure to loud noise. I do not know how it works in your country - but try meeting a doctor either in emergency department or in a clinic.