Yeah, I know exactly how you feel – I've been there few times myself. All I can do here is tell you that it doesn't last forever. Maybe you need to take few days just for you, and think things over – try to remember everything that happend to put you in the place you are in right now. That's what I did. I just sat in my room and repeated everything in my head. I was hurt and angry and i cried a lot, but in the end I realised something. All the bads of my life made me the person I am today. With time, I learned to accept them as something that couldn't be changed or erased and that bad things are part of me, wheather I like it or not. I stopped blaming everyone and everything for that and decided not to give up. It all comes to this: when you feel like the world is against you, you can be sad and hurt, but you need to get up after that. And once you do that, it gets better.
If there's noone to help you right now, then help yourself – in the end, you are the only one who can do that miracle for you. Friends are great to have, but all they can really do is support you on your way, the real improvement must come from you and you are the one who needs to take that road. Once you realise that, people will come. They will not do all the work for you, but they will be there to make it easier. You can connect with others only if you accept and make peace with yourself first. It's important that YOU don't give up on yourself and then the others will be able to help you. That's my experience at least. I wish you to be strong and brave enough to face the world and happy times will come to you, I'm sure.