I've called the suicide hotline several times when I was feeling like I just couldn't stand my life and my feelings. I found them very helpful and calming. I told them I didn't want to spiral down into planning anything and they definitely seemed to understand that and the conversation helped.

I even worried that I was calling them "too much", even though the calls were several months apart, given that I was not exactly suicidal and maybe they do have some kind of limit, but if they do I didn't reach it.

Based on my experience, I definitely recommend that you try it.