Hi - I've been suicidal many times before, and I know what it feels like to be where you are right now. I posted on the suicide forum about a week ago, and got some good support there. You might want to try posting on it.
I agree with what LuellaMay said. Is there a local crisis or suicide line where you live? There is another suicide hotline 1-800-SUICIDE. I've called them a few times when I haven't been able to get through to my local crisis line.