Is this what I'm feeling anxiety or depression?

Ok, I'm only fourteen. I'm an average teen, I have lots of friends in school, basically, I'm social.
But only in school, I hardly hang out with people out of school. My mother doesn't want me to hang out with people, she thinks all my friends are bad, but they're not. I have good grades, I'm an honor student, I have a good steady boyfriend.

I only have issues with my family, I can't stand them, They don't really like me either. My mom always calls me a failure, she never goes to any of my plays, concerts, games, ect. She just basically doesn't care about me. I've always just wanted to leave and go live in a shelter or something.

Now lately, I keep getting very jittery and paranoid about everything! Like when my boyfriend asked me to go skating, and my mom said no, some reason my stomache started getting insane butterflies, I started getting very shaky, and I didn't eat for a long time. I even sat in my room, holding a razor blade to my skin, but I couldn't bring myself to cut.

Even in school, I get very anxious for nothing. In the halls I get very shaky because people are rushing to get to their classes. My heart starts beating fast at random times, and my hands start to shake.

I don't know what it is, I need help. What is happening?

Oh, and I cry, alot. Mostly for no reasons too, or just my stomache hurts so much from the "buterflies".

And I don't know if this is relevant, but I talk to myself alot too.