'mornin - not hardly awake.
the stuff you listed on breathing, chest pain/pressure? very common for GERD. It doesn't sound like whatever you're taking for it is working.
also - fear of dependence (very difference than addiction) of benzos shouldn't keep you from them if you are in alcohol withdrawal. Frankly, I'm more concerned about you staying alive right now rather than you going through the hell to get off a benzo....and trust me, I know what that can be like.
Start with one thing to help yourself today. Try not to overwhelm yourself.
Zzzzzzzzzz more coffee needed
edit - anxiety? Oh yes, for sure. I'm the anxiety queen...or used to be. Am better now...I think having a 12 year old daughter makes me have to remain more serene in order to survive.