hi, im sarah, im 16, and i am a high jumper, this upcoming season will be my fifth year, and all five years my main focus has been on high jumping. i do run, but only a 400m (one lap), but ever since last season, my back has been hurting everyday. i noticed the pain after my third season, but then during my fourth season in mid-air i through out my back, well, during the jump i felt like a sharp pinch, and it stopped me from finishing the jump, the trainer checked me out and just said i pulled a muscle. but it has been about eight months since that happened, and everyday my back hurts so bad, it is really hard to lay down quicky, i have to ease my way to have my back flat, and every so often i feel the same sharp pain, as i did that day. i twisted it on my right side, its hard to explain where, but like a few inches about my waist. and both sides hurt, not just the one. i try everything, streching, cracking, it all takes away the pain for about two minutes, then it comes back. i really would just like to know, whether it is just a sprain or a pull, is it serious? should i get it checked out further? any information would help, thanks!