I need help

My relationship with my mom isn’t that great. I have a lot of issues that I’m starting to believe are a result of how I was raised/brought up (the difference being what she could and couldn’t control) and I also have suicidal thoughts often. I don’t care to tell her bc I’m afraid she won’t take me seriously. My boyfriend is worried about me and thinks my mom and I should go to therapy but we’ve tried that already, several times, and it only made things worse. I don’t know what to do.