Never felt so alone

My relationship is dead he’s giving me silent treatment I have no family here the one friend I do have is busy with work and family life she’s been there 24/7 text for support but I’ve got nobody my mum is 500 miles away my dad don’t speak to me as he has his new family and my sister hasn’t contacted me in 3 years. I’m ok with my son but when he goes to nursery I’m on my own. My partner knows my depression is back but gives zero shits. He actually said if I tried anything again he won’t save me!!! As I attempted suicide 5 years ago I won’t I can’t my son needs me. I can’t sign myself into hospital as I can’t depend on him for the support. I have an appointment this week with a mental health charity to get help. I’m so scared. I’m so alone and feel so lost and unloved.