What's the average weight for my height?

i am considered a very heathy teen. im 5'3, and flux between 115-120. of course i have muscle from track, but im pretty damn tiny (26in waist). i think you are underweight! because if i were to ever get to 100lbs i would be underweight, and the fact that youre taller and only wiegh that much means your underweight. you dont have to be anorexic like your friends. not to mention, a 5lb flux is perfectly healthy!