so you have no help and support now and you want to move to where you would have no help and support? You wouldn't be moving closer to people that could be there for you? Or to somewhere you are happy and familiar with? You'd be alone in a new place, still with nobody to talk to except your three year old?
When there, do you think you would be able to get out there and join groups? Be open to meeting people? Do things that would mean you had more interaction with people? How would you get the help that you need and want now but aren't getting?
A fresh start can work. It can. If you think you know what, it actually would feel better to be far enough away from my family that them being there for me is out of the question, instead of me living round the corner from them and knowing they still aren't in my corner. It would be better to know nobody and to start with a clean slate and have people take me as they find me now...
BUT. The risk is that you would be in a new area, where you know nobody, and you wouldn't get out there, you wouldn't go in search of new friendships and you would be in the new house, in the new area, in exactly the same situation you're in now.
If you feel a fresh start is what you need then great, go for it, but you need to be clear on what you would do, once there, that would change your life.
Also, you sound so very very low. Would you consider going to the gp for a chat?