Hi Pink24, and welcome to CC!
My ex-wife ended our marriage almost three years ago. In the first few days I was confused, angry, and hurt. When I wasn't working, I was praying and reading. Two good resources I found are a daily devotional from DivorceCare.org and a series of videos with counselor Patrick Doyle from The Dove TV... they're available on YouTube.
For your own healing and peace, ask for God to convict you for any wrongdoing. Deal with your own sins (I'm NOT saying you're to blame, but none of us is sinless). Also, ask the Lord to convict your husband of his. Don't try to define them; let God do that. Trust in the Lord; He is good. Let Him take over... especially with regard to the timetable and the outcome.
And, I'll pray for you. I know it hurts.