Nasty thoughts, go away

i've been thinking about ending my life all the time recently. whenever i'm at my workplace and i came by the rail, i'd ask myself, "what if i jump?" it keeps on coming. i keep on asking myself, what if i die, what if i die, and what if i die? i truthfully don't care about what i may left behind. i'd be leaving nothing. i don't know why is this. at home i keep on having this nasty thoughts where people hate me. they hate me and they don't  care if i live or die and that just make me want to end this a lot faster. i really am taking my time do stuff and all that hoping this nasty thoughts will go away by itself. it's suffocating. i'm crying and crying and crying and it hurt my throat so much because i'm repressing my voice from coming out while i'm crying.