I am a little over 2 months post-op also and have very useful hearing on my AN side.
I had very mild ringing in my ear pre-op (high pitched tone). I could only hear it in the quietest rooms or when my ear was resting against my pillow at night. That's how I discovered my AN to begin with.
Post-op, the sounds range from hissing, a squeak-like sound when there's a lot of noise or activity around me (like in a bar, restaurant or at a party), a high pitched sound like before, a combination of them, to almost nothing at all. My ear also often feels congested a lot of the time. The volume and combinations vary from day to day and even a lot of the time during the same day. It rarely gets so bad that it's driving me crazy or anything, but it is there. I guess I sort of get used to it at times or don't notice it because of the TV, radio, and other white noise. I run a fan at night for white noise to help drown it out when I try to get to sleep, but to be honest, on most nights I would be able to sleep without it because it's not that loud.
The general pattern has been for very slow improvement. Yesterday was great. I hardly heard or noticed a thing all day. Today it's pretty bad for no reason at all.
For me, this is a secondary issue to wonky headedness and dizziness when I'm active.