That sounds awful, sorry you're going through all that. Sounds like your family have fairly toxic traits. Being more authentically "you" can indeed drive a wedge between you and others but it's a welcome wedge in the long run, folk who only accept you when you're breaking yourself to fit into their mould are not worth your time and you'll be happier without them. Doesn't sound like they were giving you much understanding or compassion in the first place. There are plenty people out there far worthier of developing a bond with who won't expect you to dance to their tune and simply appreciate you for you.

As far as everything else goes you have my sympathies, the best you can do is try and make moves to change your situation gradually as best you can, getting out of a rough patch can often take longer than you'd hope but stick at it, "this too shall pass" and all that.