Ear fullness and tinnitus in left ear 5 days after very loud singing; is this permanent?

I’ve heard of temporary threshold shift after loud noises, etc., and this has happened to me after hearing or playing loud music, but never has the feelings of ear fullness and tinnitus (and intermittent pain) lasted this long. And it’s only in my left ear. How long can temporary threshold last and what are the chances this feeling of fullness and tinnitus are permanent?