Feeling to tired to continue.

I don’t know what to do…

I feel like I’m drowning with no way up.
The only reason I’m still going is because I won’t leave my son without a mother. I’m a single mum to a beautiful little boy. I struggle with him with behaviour both home and at school (he has ADHD and suspected ASD). We are adjusting meds trying to get it right. I have to move back in with my sister because the rent in my house is going up to an amount I can’t afford by myself. I’m trying to find a job but have 0 progress with it. I have tried talking to my regular doctor but she is reluctant to set up a mental health plan. I don’t know why she won’t. I just don’t know what to anymore.