Back And Chest Pain At 12 yrs old?

How are you sleeping at night? If you are sleeping on your stomach that is the worst position to sleep in, it causes your back to hyperextend which is really hard on your spine, your spine is not ment to extend that far.. Also how old is your mattress? A new mattress might be a good thing if your current mattress is old. Try sleeping on your side, with a pillow between your knees, that positions your spine correctly and the pillow will help keep your knees in line so they wont fall to the side and twist your spine...I find I have the same problem and it is usually because I woke up on my stomach...