Dear Geek, sorry to hear you're having a shocker ....
I had some thoughts on a couple of things you said ...
You mentioned losing your faith and my faith has changed immeasurably from that of my teenage/early adult years when I enjoyed being part of a young evangelical church community. However increasing maturity and contact with those who believed other things and the challenge of suffering in the world, alongside to me the illogicality of some of the fundamental christian beliefs, challenged me to move on in my life/faith journey.
I wonder if you can begin to see your journey in those kind of terms rather than just feeling the loss of something you once held dear?
I came across the Quaker faith and community which has provided a good spiritual home to me as though valuing the christian tradition is extremely liberal, having no creed but testimonies instead ... that is we try to live out the testimonies of peace, truth and integrity, equality, and simplicity (and increasingly sustainability) in our lives.
But I'm not trying to convert you, honestly! well only a bit 
Just that we have an expression to "follow the promptings of love and truth in your heart" - I think if you seek to do that you won't go far wrong, even if it does take you along unexpected new paths?
I wondered if I'm now an atheist, or perhaps a Quaker non-theist, but my dd tells me I'm a classic agnostic - one of life's fence sitters. In fact she says that if she is trying to remember what an agnostic is she thinks of me.
And I think she definitely has something there!
The view from up on this fence is pretty good in both directions, if somewhat uncomfortable at times!
Also you said simply that "DH doesn't help" I'm sorry to hear that and can sadly relate to that too 
Living with my DH is one of my challenges, though he certainly provides some support especially in parenting the DC.