I've been going to AlAnon for about three months. I first went to the nearest large city and later found out about a meeting in my very small town and started going to it weekly. I had the same apprehension as you and it took every bit of courage that I could muster to actually get out of the car and go inside. As it turns out it was the best thing I could have done for myself. I did know someone there who I had worked with in the past and it was a non issue. I was driving 45 minutes until I found my local meeting which is 10 minutes away. It was a Godsend.
Good luck to you. Why not give it a try? You might be pleasantly surprised as I was.