I have been divorced from my ex for about 4 years. We separated in 2003. He took the child under the pretenses that I was going to get him back after I got settled on my feet. I have another child from a previous relationship. He took him and refused to let me have any contact with him at all. I would track him down and he would move again. He and I both lived in Florida at one point and when I was supposed to get him at Christmas he decided to move and not tell me about it. He left the state of Florida and moved to Tennessee (which he refused to let me know about). About 8 months ago, he called my parents to tell them he gotten married for the third time and was moving down to Louisana. I just got a letter from his 3rd wife, soon to be ex, that he and my son had moved back to Tennessee. Since 2003 I have only seen him once, he won't let me talk to him, and refuses to give anything that I get for my son to my son. My son cries at night and tells everyone that he can that he wants me, but I have no way of contacting him because every time I do, he moves him again and I have to go through the process all over again.
I want custody of my child as I don't feel that his father is fit to have him. I work part time and I got to school full time. I have been in a relationship for almost 4 years and my fiancée is a pastor. I don't have any money to get a lawyer; however, I don't know what to do. Any advice please?