Mental Health hospital that could admit me

My life is difficult right now. I think I might have a bit of autism and life has just been difficult to me. No one in my family cares for me and I currently live with my mother but I am always arguing with her and she has quite a bit of a temper so sometimes when I pester her too much, she doesn't hesitate to pull a machete on me. I have no work experience since I haven't worked in nearly five years and in the first few jobs I was fired due to my mental problems. Is there a mental hospital in the city that will admit me and possibly give me psychiatric treatment? I can't continue living like this. I might actually kill myself if there is no other alternative. If I continue having big arguments with my mother I will end up on the street and homeless. I need to avoid this by seeking mental health treatment.