Hi, alright i am sixteen years old. For the last three weeks, i haven t ate much. I only eat a little, i use to weigh 130, now im 120 in less than 3 weeks. I ve been feeling constantly sick when i try to eat, and i keep getting really bad pains in my liver/ rib area. An i am always tired, an i have headaches , and my vision is always blurry. What do i do?