Hi, SevenWindows, welcome "officially" to SR!
In my experience, I also had anxiety after I quit drinking... long story short (LOL), Part of my issues with alcohol were anxiety. Sort of like the chicken/ egg dilemma. Was the drinking caused by the anxiety, or was did the alcohol cause me to be overly anxious when I quit? I have done some work with my shrink, and am on some meds that quell that part of me that would be tempted to do what you are doing.
So- I feel what you're going through.. are you following any particular program or path? After medical science has done all it can do to show you you're ok, you need to look elsewhere- perhaps your answers don't lie in a test or an x-ray. Any thoughts about that?
Best, S