My advise would be to FIRST make the appointment with the therapist. It does take courage, and THEY are there for YOU. These people have a job to do and it is to help people like us see things in a different way. I swear that therapy has changed my view on life 100%. Don't be scared. They are there to help you.
I urge you to take no further action in leaving your AH until you talk to a counselor about how you are feeling. It makes thinks easier, if nothing else.
I know Alanon and know that steps and know how to take care of myself and a VITAL part of caring for myself is finding someone to talk to. Find someone.
Many prayers to you.
Jenny