By what you posted your dealing with an insane amount of stress. Being part of the LGBTQ community must be difficult without the support of your mom. Do know there are people who care. I saw that you have a dad mentioned in the comments. I'd be asking if you could live with him and tell him EVERYTHING. If your dad won't rescue you then tell a counselor at school or maybe go talk to a police officer. If they won't help you... stay strong. There is also a suicide prevention hotline/service specifically for LGBT youth called The Trevor Project. FYI if you weren't aware. Best of luck with your mentally unstable abusive mom. How the hell are you posting this btw?