Being a Baptist doesn't make anyone a Christian.
Being born again, ie our spirit being brought alive by God is essential to becoming a Christian. Then, following Jesus' example in life, ie obeying God in everything, is essential to being a Christian. We all need to self assess to see if that is our case.
Sadly many of us have been born into a particular denominational faith and have been taught scripture, and have adhered to our denomination's peculiar religious observances and bias, and because of that we believe we can call ourselves Christian. This is a deception by the evil one.
In my opinion your hope for remarriage lies in the hope that you may yet to be born again by God, and of course it's only He that can do that to you, no man can will it on you. At the time we are born again, we are set free from the past ungodly ways that ensnared us, and what would have been the eternal consequences of those sins. Our life is born anew.