If I lost my parental rights for child abuse can I see my child now?

My parental rights were terminated by Chicago Department of Children and Family Services when my son was 5. They said I was guilty of child abuse. I never hurt him physically, I was hooked on drugs and couldn’t take care of him, so they said it was child abuse neglect. His foster family adopted him against my wishes. He’s 14 now and found out where I live, I never moved away from him after the court case. He’s been contacting me and wants to see me, but says his adoptive family won’t let him. Is there anything I can do to legally see him or have court ordered visitation with him again? I’ve been clean for several years, have a job and have a daughter who is his half-sister. My son should be able to know his birth family.