as you are already visiting a doctor he must have done a thorough work out of your case. bilateral shin pain in a youngster is most likely stress
fractures. but there are other causes, most likely in your case can be a bening bone tumour most likely osteoid osteoma
which can cause agonizing pain in shins. other causes include osteoporosis
, metabolic diseases etc. ask your doctor to get a CT scan
of your shin. bone scan can also be helpful.