Please get off this website right now and call up the crisis hotline number in your area. They have resources, so just ask the person you speak to for info about free and low-cost mental health clinics in your area.
Feeling suicidal - regardless of what's causing it - is not normal and you are a danger to yourself. You know this because you already made one suicide attempt. Also, the world would be at a great loss without you in it.
I know you're overwhelmed right now and feeling really bad about yourself, but the fact that you're being honest w/us about how you feel shows you are searching for the help you need, and that is great.
You just need a little help right now and there's nothing wrong with that. So please, contact the hotline and come back here (when/if you feel like it) to let us know how it all went.
Even if your brain is telling you right now that there isn't much to be hopeful about, there's plenty of hope for you.