Look after yourself and maybe think if you have to go home every time. Once I left for college I rarely went back and only then for a few days. Looking back I can't believe I did it as I didn't really have friends, but I managed to rent rooms in pretty lousy houses and scape by on benefits or awful jobs, but I was safe.
My heart goes out to you. My t once said she would miss me if I killed myself and I didn't believe her. She said she was really sad about it and how I felt. Try to do whatever you need to to keep yourself safe. You are as important as everyone else. You deserve better.