Carl, my brother got really drunk one day and had his sony walkman on and the volume cranked. Ever sinse then he says he hears what he describes as "crickets" constantly.
Have you had a hearing test? It well let you know how well your hearing in % per ear.

Every time you expose your ears to high SLP your doing damage. My ears well ring loudly if I don't cover them in high spl situations. No way around it.