Now is a time like no other to hold onto God, He is now your Husband and will see you through this. He should always be first because when we lose everything, we never lose Him.
My ex molested our daughters, we had been married almost 27 years, and I loved him very much. But he made a very bad choice and he threw away everything he had. I had to do what was best for the children. At first it was one hour at a time, then a day at a time. It has been almost 12 years now and I think about him less and less, but it took nearly 10 years to get through all the grief. The Lord once directed me to look up the 7 stages of grief, and I could follow it through the entire 10 years.
Pray for your husband, he needs it just like my ex needs it. It doesn't feel like it right now but it does get better, less bad days and more good ones.