I also had a husband that lacked understanding but upon learning that I suffered from a disease and had the strong possiblitity of recover, he still left because he wasn't willing to have the patience and provide the support to enable me to acheive recovery.
It may feels like you are being hit with 2x4s from all directions but I have found that if I am willing to remain open-minded, that I can find strength through adversity.
For heaven's sake, please keep posting, keep reaching out, keep asking for help and if you feel like no one hears you, you always have the option of standing on the nearest corner and screaming "HELP" until you find a compassionate soul to reach out to you or you find the situation so ridiculous that you can find some humor in what is a horrible and lonely situation.
We are here for you, when you are overwhelmed, just keep your eye on the prize and do the next right thing. You will be in my prayers.
God bless you...
ptk