Does anyone know what is wrong with me?

First of all, I don't think you should worry. Most of what you describe is about being 13. It is a very difficult age. You are not a child and you are not grown yet. Remember the song by Brittany Spears? Anyway, get your mom to take you to the doctor and have a thorough physical exam with blood work. Since you are not eating properly, you may have a vitamin deficiency that causes some of your trouble. Tell the doctor everything you told us here and give him/her a chance to come up with what is troubling you. It may take several visits and maybe some referrals. When you are not feeling well, it is difficult to be interested in anything really. So be a good daughter and start telling your parents that you love them. I am sure they will be so glad you did and will start telling you more often that they love you. It is kind of a trick to draw them out. Try it. Good luck!