I don't feel normal...

I feel sick, like I'm going to throw up. I feel like my throat is closing. I feel like I can't get enough air. I want more air. My mind is racing. I've been so anxious. My leg shakes when I sit in a chair and I can't stop it. I hate anxiety. I hate the way it makes me feel. Sometimes it makes me feel like I'm dying and I don't know what to do.