Previously me and the father made a joint custody agreement were we would switch off every week having our son. It hasnt been going like that since we made the agreement. I have my son and his dad will have him for a weekend maybe once a month just because he never contacts me to see him more.Well, yesterday out of nowhere my sons fathers mother (sons grandma) called and asked to take me to lunch to discuss something major anout her son.... apparently ahe just found out that my sons father is a heroin addict.... and has been using for the past 9 months. I am so pissed, because he has deffinitly had my son over night in the past 9 months and I had no idea he was high...what if my son grabbed a needle!!?? Anyway, I want to file for sole custody, and maybe give his dad scheduled supervised visitation... am I able to file if I have no phone number or forwarding address for his father?