I feel like a peice of s***?

I have been feeling ugly and fat and just grows i have like no self esteem what so ever. and most of it is from my own family call me names. my mom just called me fat. sometimes i think of my self so ugly that i dont think about my self being a girl :( i want to be succesful so bad but i dont recieve encoragement. i feel so alone i have one friend thay my stupid twin is taking away from me and ive never been asked out only once what can i do to feel better :( there is no point in life right now its summer wgich means i have no life till school starts and i enter high school