Your mother sounds a lot like mine.
It would be nice if we all could lean on our family, as someone here suggested, but that isn't always realistic. Some peoples families are the reason they are depressed in the first place, and they aren't helpful in any real way, but actually harmful. Mine are claiming they are there for me, but it's too late.
They noticed I was depressed 20 years after I'd already been through it and making it obvious that I was. There is nothing they can say or do that will be helpful to me and they don't know how to listen or just sit with me without criticizing or making some insensitive comment that makes me feel even worse than I already do, so...pretty much they are useless to me. It sounds the same for you too.
I also know what it's like to live in a big city on your own while you are experiencing these issues, and trying to make it on your own, without any real friends...it's damn hard. It takes so long to even find the right place to live and the right people to be around...even when you aren't depressed. When you are though, it is ten times harder. I feel for you.
Sorry to hear about your room mate. He sounds like an A-1 Douche.
Welcome to the forum. There are lots of understanding, empathic and genuine people here. I'm sure it will take the edge off your reality at the moment...until things can improve a bit at least.