Hi welcome to health care magic forum,
Fluid in ear called ottitis media with effusion (OME) .
When infected and pressure behind the drum increases than it break the drum and leads to perforation called suppurative ottis media(CSOM).
Both OME or CSOM may lead to hard of hearing or deafness
In my opinion you should see an ENT sepecialist for through examination of your drum .
You may undergo for a pure tone audiometry
for proper assessement of hearing loss
If conductive type than it is likely to improve.
But if it is sensorinerual loss than less likely to improve.