Dear Rayna,
So glad you found our 'club'. You're very smart to alleviate your fears by seeking out knowledge and experience, of which there's lots here!!
My first thought, on reading your post, was it's 'funny' that your ENT said you probably have an AN, since almost all of us were guided to having an MRI "JUST IN CASE" we had an AN!! Just a suggestion -- if your emotional concern gets too intense, you might want to request an MRI (WITH CONTRAST, that's critical) earlier than November and then you'd KNOW if you have an AN or not.
in any case, if you haven't gleaned it already, ANs are:
-- benign, although they can be pressing against the brain stem, at which point it becomes critical to remove them (but most frequestly they aren't pressing against the brain stem);
-- usually very slow growing, so there is time to come to a decision about treatment;
-- treatable several ways that fall under three categories: (1) wait and watch -- get an MRI every year or so; (2) microsurgery to physically remove them and (3) radiation to zap them which hopefully kills them in place within several years.
The decision on how YOU WANT to treat it is based on it's size, it's position, and what kind of treatment you feel comfortable with (and, of course, how far you're willing or have to travel to get the treatment of your choice).
Both the AN itself and the treatments can cause: some unilateral hearing loss, total single-sided deafness (SSD), tinnitus, balance problems, a myriad of facial nerve problems including blinking problems, etc. There is a closely related AN condition, NF2, that affects hearing in both ears, but if you're experiencing unilateral hearing decline, it's unlikely you have that.
Anyhooo.... this is a wonderful forum, full of caring and intelligent folks. No question is silly, so fire away.... Deep breath, we all tell each other!
Ask questions and do let us know as your 'adventure' progresses. Let me repeat, we've all been through the wringer, so we respect all questions and concerns.
Hugs,
Dana