*Sorry for your problems. I hope you're in a much better emotional position now.
You could become Catholic. I believe your marriage was invalid. Please don't let a civil divorce stop you from pursuing the Church.
I was married in Church and have been separated/divorced for 12 years. I hadn't been involved with anyone sexually or romantically since my husband so I receive the sacraments. I'm a CCD teacher, and I still wear my wedding band and go by "Mrs." I was never treated with disrespect by anyone in the Church due to my situation.
My best friend was married in a civil ceremony because her husband was married in the Catholic Church 20 years ago and stayed with his wife only one year. He didn't pursue an annulment because of the cost. They've been legally married for 17 years. She is raising her child Catholic, and she takes him to Church regularly. She and her husband, however, cannot receive Communion because according to Church teachings, she is living in sin. According to the Church, he is still married to his first wife and he and my friend are committing adultery (hence, living in sin). So . . .
I'm divorced civilly but by respecting the fact that I am still married in the Eyes of God, I can receive the Sacraments. But my friend who is a married woman (by law, not by God) cannot receive the Sacraments. Every situation is different and somewhat personal.
Whatever you decide, my prayers are with you.