Do you always go to hell if you commit suicide?

You're 15 years old, definitely got an entire future ahead of you. Don't commit suicide, don't even think of it. That's not an option. Life gets better. If you're life is truly that bad, it will only get better, a lot better, I promise. Depends on your religious beliefs whether or not "god" will punish you for things you do on earth. You do want to live. When you die, that's it. There's nothing left anymore. Why would you want that? Don't let other people ruin YOUR life.