Thanks for posting on HCM,
From your description it is very possible that you must have broken or severely traumatized your vertebral
column. You will definitely need an X-ray and if possible a CT scan
to determine if any fracture
or spinal lesions. For now, you will need to continue using analgesia as you do and consult an orthopedic surgeon as soon as possible. The doctor will then be the one to order for an X-ray or which ever test (s) he/she deems necessary for you.
Hope this helps