I know it can be hard growing up. Kids are really cruel, especially when your just finding your identity. Remember that you are only 13! I know you think that things will never get better, but they will. People mature and become much more accepting as you get older. And all that bull in school, like whos popular, whos the skinniest etc. it means absolutely nothing. When you leave school none of that matters. People accept you for who you are. Don't let things get to you. Also, about losing weight, the way I did it was calorie counting. If you stick to 1200 - 1500 you will surely lose weight. Hope this helps!