Hello Sister
Is your husband a Christian?
It is a shame that something like this has happened to you, and I know how hard it must be. Take strength in the lord, and know he is unchanging yesterday, today and tommorow. He will never leave you, no matter what.
Jesus speaks out against divorce, and states that it is sinful unless your partner has committed adultery. If there is any way to save your marriage, do so.
God bless you.