I think my hearing is damaged.

Let me explain. I am a 46 yr old male. I know cant hear like I used to. People have to repeat themselves. Thats not what I am talking about. Whenever I have a cold my right ear will vibrate inside. It is annoying to the point that I dont want to listen when Im sick. It is always my right ear and never my left. It dulls my hearing until I get well. I have had hearing tests and my right ear is slightly less sensitive. I did a drug for 10 years that may affect hearing. So what is the vibrating??? Is there damage to the eardrum??????