Please help me out. Am I crazy?

My life has been spiraling down. I have a step dad who likes my half brother better then me clearly. My mom is blinded from the fact my Step father hates me. My friends aren't really friends anymore. They don't talk to me much anymore. I am 13 but I don't think it is "PMS" that is making me this way. I have dreams about death and something bad happening to me in every dream. Like rape and many other things including assult. My boyfriend hadn't really been talking to me. I feel rejected. Not only did I crash my dirtbike and break my arm but everyone is ether talking crap or ignoring me. On Saturday I slept over at my friends house one is 15 & the other 16. A guy in my grade is there brother and he told everyone I slept with him. Its untrue. He slept in the basement. The vice principal HATES me. I consular can't do anything! I hate that I'm it on my period and DEFINITELY NOT pregnet and I'll just start crying. I try the hotlines but they don't do anything except "ok. Uh huh I know how you feel." :( I want to die. I really do.