I just want to think everyone for helping me through this. I've been doing better!

I'm counting the days till I get back to school, and get close enough to a sister to tell her about my situation. But there is another question that I need answered.
During one of my nights before school let out, and after I had recived my bid, I was plotting a suicide, not sure if I would be able to carry it out. It was so awful, and would hurt mainly my sisters so much. I guess I should say what my plan was. I planned to go into our suite (at my school, sororities have suites, not houses), and do something morbid, and have a sister walk in and find me dress in either white or black, and I'd be wearing my pledge pin. That's about the simpliest way to put it. Should I tell this to the sister(s) that I confide in, that I thought of something like this, or sould I keep this to myself so that they don't worry about coming into the suite? I really don't want to hurt them....I love them too much already. And it makes me sick to think that I wanted to do this.