I am 14 and a female. I have a long history of having bad back and bones. Yesterday (May 1 2013) I was dancing in choir when a sudden shock went trough my body and shearing pain in my back that took my breathe away. I continued dancing because it had happened many times before. Once we were finished I couldn't move or breath. I was shaking, my back was spasming, I was super dizzy, and I could only take shallow breathes. It went away but this morning I bent over to pick up some clothes and it happened again. This time every breathe I made restarted it all over again. I had to stay home from school and now on a heating pad. My mother gave me a muscle relaxer but it's still hurting pretty bad. Could you give me an answer of what's happening????