I need help

I constantly think about killing myself, and I can’t stop. It’s like everything I do makes me have the urge to do it, and I’m trying so hard not to. I know I need help, but I have no money for therapy or a mental hospital, nor do I have insurance. I don’t know what to do anymore. I just feel like no matter what, I’m gonna feel like this and that one day I might follow through with it.