The teenage years are the toughest years mentally that you'll ever have. Everything in your body is changing so fast, and that includes your brain too. The chemicals in your brain are changing -- the hormones and chemicals are trying to level out to an "even keel" so that you'll feel "Normal" (whatever that is) and all of this is going on in your teen years. It's total chaos. And while this is all going on, you're expected to act normal. Well, that's very difficult to do. You want to cry a good share of the time and usually for nothing! You want to punch the wall in, and that's usually for nothing too! Your Mom expects too much of you because she sees you as an adult, and you're NOT -- you're still a child -- don't rankle at that because you ARE a child.
Many of your problems could be due to hormonal changes and just growing up. But it would take a doctor/psychiatrist to be able to diagnose you. It would be best for you to see your doctor -- he would know if you should be referred to a therapist or not. Ask your Mom if you can see your doctor. Tell her you have some issues you need to discuss with your doctor. Then he can make the decision as to whether or not you need to be referred.
I wish you the very best. I wouldn't go back to being a teen for all the money on earth. It was AWFUL! God bless and please let us know how you come out, will you? Take care. Hugs, Lee