I live in Mississippi and the mother of my child lives in Oklahoma, but the divorce and custody papers are filed in MS. She has been through many ups and downs and many stages in her life since our divorce. There are several things that she has been involved in that I do not want to see my child around. During one of her phases, she gave me physical custody with visitations for her to not exceed 6 months out of the year. Child support was also nixed since I have custody most of the year. This paperwork is signed and notorized by both parties, but has not been filed with any court system. Well, now she is back with her mother and the two are plotting for custody of my child. How legal is the paperwork I have?