It has been five years since I lost my hearing in my left ear. It seemed sudden and it was complete. I am not sure Mayo or Cleveland Clinic could have helped but if you do go do it ASAP before your loss is total.
For a long time, and now occasionally, I heard noises in that ear. It seemed like my brain was playing pinball trying to hear. I have come to except it is permanent. It is frustrating. I think it is impossible for anyone without this condition to understand even those who are very hard of hearing. Good luck.