How'd it start? Do you know your reason? Does it go away?
One night two or three months ago my ears just started ringing. I was fine one second then they just began ringing and wouldn't stop. Prior to that I had been having ringing moments for a few days however they lasted at maximum one hour. I went to bed, expecting it to disappear come morning, but it was still there. Three days of non-stop ringing later I went to the doctor, he checked my ears, found excessive wax, removed it, and it didn't help one bit. For a few weeks I thought I had a sinus infection or ear infection, since I was having sinus pressure and tension headaches, so I'd clean my ears daily with hydrogen peroxide. Nothing changed.
So it's been like this for a while now. Sometimes it's barely noticeable, other times it's like a small alarm in my head. I think it disappeared for a few days but now it's back. I'd like to imagine it's stress related..