Welcome,
Sorry to hear you are having hearing problems. The buzzing/swishing noise is likely tinnitus,, many people have it with or without an AN. Sorry to say, it may not go away but may get better with the meds. Your hearing may improve also with the steroid treatment. I have read of people who see hearing improve after a round of steroids. Maybe yours wil too,,
After the steroids, maybe if you have not shown improvement, your doctor will order an MRI with contrast to see if anything is going on,, try to be patient for 10 days,,
We will be looking to hear back from you