Originally Posted by
ipaidwithmylife 
And I know I really have to stop bothering people with my problems, as I'm not adding anything of use to this forum, but I feel awful and have been feeling so empty for so long.
You are not bothering anyone with your problems. SR exists for support and you are seeking it. But some things cannot be resolved over an interweb forums, and that thing is medical issues. We can't diagnose you.
You are getting yourself worked up. Too worked up, over the unknown. You have concerns that need to be addressed by a medical professional. The brain and body is amazing resilient when it comes to recovering from alcohol abuse. Most of us have decades of drinking and once we quit we regained our health.
What you are experiencing may have NOTHING to do with alcohol. Only a doctor can determine that. So put away your fear before your anxiety makes you sicker than your drinking did.