I agree with Nite Moves, it's probably Tinitis, basically a fancy word for nerve damage in the ear. And, as the Doc will tell you, there is no remedy!! How do I know??? I have had Tinitis since March 20th 2000, 3 days after playing a St. Patricks day gig with my band. It wasn't a particularly loud gig, but it doesn't need to be to cause nerve damage. Have you done anything that could be considered loud lately, such as air chiseling or sawzall cutting on your car?? Gone to any concerts??
As your Doc will tell you, it's not cureable, and an earpiece will only amplify sound and drive you nuts!! Most times I don't even notice the ringing, I'm just so used to it, but when it first happened, it was almost unbearable!! Good luck to you my friend, and sorry to hear of this!! Geof