What is wrong with me?

Im sad and crying ALL the time. i feel like everyone hates me and is annoyed by my presence. i feel worthless and like the world would be better off without me. i keep having ual thoughts about my molester and afterwards feeling suicidal. i've been like this for about 3 years and it just keeps getting worse and worse. i dont know what to do because no matter what i tell my parents, they dont do anything about it. I'm home alone almost all the time and i feel like i have very little friends. i feel like dying and on the verge on doing it. please help me!