Welcome at HCM.
I have read complete details of your question.
It looks from your details that you had a history of fall & having pain at your back & head.
If this pain is still persisting & of severe nature then this can be a fracture
. You should not ignore & should have a x ray of concerned part.
Till then you should do following-
-Take complete bed rest
-Avoid lifting heavy weight.
-Take a good analgesic
like advil or aleeve.
-Take a supplement of calcium & vitamin C
Hope this all will help you.
With best wishes.