There's a theory... I'm not whether I believe it or not... that malevolent entities can get inside our heads and affect us and even cause us to commit suicide. This book here explains it.
http://www.amazon.com/Dark-Intrusions-I ... f_ee_p_t_1
Another book you might want to read is called "Suicide: What Really Happens in the Afterlife"
http://www.amazon.com/Suicide-What-Real ... 213&sr=1-1
Hopefully, by filling your mind full of the horrible possibilities that could happen if you kill yourself you'll be less likely to kill yourself.
I'm a big reader if you couldn't tell.
In another set of books, "Journey of Souls" and "Destiny of Souls" and in my boyfriend, Ron's, own experience of his past-life suicides, it seems that certain souls have a tendency to commit suicide in life after life. I wonder if you were able to hypnotize yourself to your past lives and see if that's what happened if you'd find the reason for your suicidal feelings? And you know what else.... it just occurred to me that you could be an empath and simply be picking up the feelings of your own mother. She seems to be somewhat suicidal as well to have said "join the club". If you're suicidal without being depressed, it could be that you are picking up HER suicidal feelings, which is why you don't understand where it's coming from. (Or you could both be affected by the same environmental toxin or demon.) There are really a lot of possibilities. Studying this problem could prove to be very interesting for you if you like learning about spiritual things, which I assume you probably do or you wouldn't be here on this forum.
I can tell you that we're not exactly qualified here to assist you. All we can do is let you air your feelings and tell you what we think from our personal experience. None of us are therapists. I know there must be suicide forums that are staffed with real therapists though. And if not, there's always the hotlines, but they may just tell you to seek counseling. I really don't know what they do. Couldn't hurt to try since it's free and they hear stories like yours every few minutes.
I think it's good that you're talking about it. Keeping those feelings bottled up inside can make them stronger. It's good to come here and talk about it or talk to a friend. Have you considered your school counselor? You could get out of class AND get therapy at the same time!

Sounds like a good time all around. Therapy is fun, so take what you can get. Your parents might not be able to afford therapy and probably don't have mental health insurance. And your mom could be depressed because of financial issues. It could be that your whole family is depressed and suicidal because they feel like the recession is getting the best of them and now their daughter (son?) needs therapy and they can't afford that either. Or like you said, they may just not believe in it. A lot of people don't.
If you want to read something really wild that my boyfriend wrote about suicide, check out this thread:
http://everythingunderthemoon.net/forum ... t8800.html
I've heard similar stories in the books about suicide. It's important that you know this before you try to kill yourself because the results could be so horrible that you'll wish you'd never gone through with it. But there'll be nothing you can do once you have that thought - because you'll already be dead. Just know that it's not "lights out" when you kill yourself. I've left my body many times and so have thousands of other people. Earth is simply a school that souls go to to learn. If you kill yourself, you screw up your own life contract, as well as that of others', which can cause a deep feeling of regret and disappointment in the afterlife.
I wish you could get hypnotized and have a life-between-lives regression like they do in "Journey of Souls". Then you'd know once and for all why you have these feelings and I bet it would clear them up completely and give you a whole new lease on life. But those are expensive and could be hard to find if you're in a small town. I hope you'll read the books anyway and then maybe when you're a little older you'll be able to go have one done on yourself.
You can write me on Facebook if you feel like talking to me privately.
http://www.facebook.com/everythingunderthemoon
Best wishes to you. I'll pray for you to find meaning in your life and for the suicidal feelings to stop. Oh yeah, try putting a white light bubble around yourself (just imagine it there) to protect you against other peoples' negative feelings.
Bright blessings,
Starwitch