Getting on for 15 years ago, I experienced a sudden pop sound in one ear, no reason for it, I was sat reading the paper at the time, but that was it, most of my hearing in that ear gone. To cut a long story short the ENT consultant said that sudden hearing loss does happen from time to time, with no known reason, and, apart from going immediately on to intravenous steroids, which may or may not help, there was little chance of improvement. I was offered a hearing aid but declined.
The positive side of my hearing loss is that I can turn away from things I don't want to hear, the negative is that I have lost the stereo effect, so don't know where sounds are coming from. There's worse things that can happen. I'm not diabetic (my husband is) and have no other conditions, so just one of those things.
Hopefully,
@mzlinda , yours will be a temporary inconvenience.
Sally