My ex is continuously slandering me. Posting legal proceeding's and lies on his face book page about court. It is ongoing and closed. He also posted part of my medical records.

Have you filed to have him stop in family court to get a court order to make him stop.

Have you filed for a order of protection, from "online stalking" at the sheriff or police department

Have you asked FB to yank this or you'll sue them? You can report inappropriate posts on FB.

I would report the harassment to FB, and file a police report, but he isn't slandering you if he is posting documents from a court proceeding that he was a party to. Additionally, how did he get the medical records to post? There is a lot going on here that we don't know about, but I would forget the slander, and take steps to protect myself against the harassment.