help needed! :(?

im 16, 5'3 and weigh about 118 pounds. every time i look in the mirror i see something wrong with my body. i try to go days with out eating, i think about everything im putting into my mouth, and feel horrible after eating anything. i can literally feel my thighs growing. sometimes i get so depressed i eat sometihng that is off my "safe foods" list and i gett more depressed. i constantly think about food and my body. i want to lose weight so badly, and this is really starting to take a toll on my life. when im eating a "healthy and balanced diet" and exercising i still feel fat.