Parents won’t get me help

What I would try to do is try to talk to her one more time, really put your best effort into this. Really try to explain how you feel, and how you know the only way it's going to go away is if you get help. If this doesn't work, you could try to talk to another adult you trust who could either talk your mom into getting you the help, or actually get you help themselves. If this doesn't work, you could always look into the teen help centers in your city.

If this is the case you might need to take action yourself. Have you ever been to a Councillor. They help alot :)

You should try talking to your guidance counselors or social worker at school. It's their job to listen, it's free, and they might be able to help. Also, if you wanted to try, they might even call in your parents and talk to them for you, or mediate. My parents don't listen to me either, but I've found that when they hear about my problems from an authority figure, they take them seriously. Which is annoying, but works.

As and adult here I feel so sorry when I see stories like this,and I see it far to often.
What is it with parents! well some parents :-(
I dont know if trying to talk again to your mom with help you,by the looks of what you say you have done your best.
I would try calling a councilor or seeing some one at school.You need to be able to talk one on one with some one who has experience.
I dont know where you live sorry ,as blah goes to many places around the world,but.....I know you need to talk to some one who will listen,so I am offering some free phone numbers that you can call 24/7 .They are teen crisis numbers im going to give you here and they are also confidential service ok!
Please call one of these and talk to them,I'm sure they can help you.As some one my self who does volunteer work with people who have got them self in situations that you dont want to be in (all i can say ,sorry!) I know you need to get help here.If I could give you may private details I would,sorry!.
If you live in The USA call 18002738255 In Canada 18004483000, in New Zealand call 0800376633 in Australia 1800551800.
I hope this helps you
Good luck and take care..