What Causes Headaches, Bodyaches And Weakness In Hips And Ankles?

i am 14 years old and for a year no i have had really bad head aches and body aches my knees give out and my ankles are weak my hips sometimes have so much pain it is hard to walk and i have alot of lower back pain all the time but more when i wake up i hurt bones easily i have been doing gymnastics and cheerleading since i was two now i don t compete anymore i quite when i was nine but i still go once a week to gymnastics for a work out and i have been doing front handsprings as long as i can remember and i pulled my muscles and tore my tendons and ligaments in my elbow and i know for a fact that i didn t land on it wrong it gave out and became weak i get dizzy and faint a lot and really drowsy when i have a headache and very dizzy. I have very bad stomach pains and they are saying it is bursting ovarian cyst and they told me that is there guess cause they cant find anything else i feel like i am 50 is there anyone who knows what is going on this is horrible and im only fourteen and doctors keep blowing me off i need help please!