Ring, ring...hello?

I've been experiencing ringing in my left ear. It's not a constant ringing, but it comes and goes. I don't really know what started it. I'm guessing it happen around the time I got a cold about 3 weeks ago. The cold was kinda bad but I didn't think it was that bad. Anyway, I set up an appointment for tomorrow, April 2nd. I really hope it goes away. It's annoying and causing problems for interpreting.