M, I'm very, very sorry to read about your situation. It's very difficult when you have a child in the mix and you are trying to paddle up stream and your h is at the bottom of the pond attempting to pull the boat out from under you.
I know you do not think this, but the d will bring you a little bit of peace in one sense...the heavy burden that you've been carrying called "stress" will be lifted a bit and that's when you will be able to begin living your life to the fullest w/your d. Right now, the veil is still closed over your situation and you cannot see what is on the other side, but you will in time.
As for your relationship w/your h being over....not in this life time. You will still have a realtionship w/him because of your d and who knows what God has in store for you down the road. Both of you just might meet up at the cross roads later on in life and reconcile. You just don't know. But, you can't wait around for that to happen. You have to live your life to the fullest and embrace each and every day and the happiness that God will bestow on you as you walk the path. It's not over until God deems it is.
Hugs!
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.