Maybe you are taller than the average person this can account for quite a bit of weight. Also, maybe you have a larger frame or build or develpoing faster than the others your age. Don't be too concerned about what you think others are thinking about you. Im sure they have many flaws themselves! You have to learn that it doesnt matter what others think its how you feel about yourself. There are many other factors to you than weight: your smile, your laugh, your intelligence, your personality and sense of humor, your talents. You are all of these combined! good luck