Nikki —

You can get divorced, if necessary, to protect your or your children's rights, but to get remarried you will need to seek a declaration of nullity (commonly called an "annulment") in order to remarry before your husband dies. This establishes that, at the point you were married, something was defective that made the marriage null and void. (What happens in a marriage is irrelevant to an annulment; what's important is what happens before and especially at the point of the wedding.)

I recommend this book for you: Annulments and the Catholic Church by Edward Peters

Another cheaper, briefer resource is Annulments; What You Need to Know by Jimmy Akin

Eric

Nikki,

The law allows you to divorce, which is a civil matter, not a Church one, as the Church does not recognize divorce except as a civil remedy to protect spousal and child rights if you and your husband separate.

There is another reality called the Pauline Privilege, which applies to a spouse who becomes Christian when the other does not. If the non-Christian spouse will not allow the Christian to live in peace as a Christian, St. Paul says the Christian is free to leave the marriage and marry in the Lord. (1 Corinthians 7:12-16)

Mary Ann