Every once in a while when im laying in bed i get this sharp stabbing pain on the right side of my body in the rib/lung area and it hurts extremely bad to breathe very deeply for 10 - 15 minutes whenever it happens. Its right up under my breast area and it feels like its behind the rib cage but i cant tell.

Can someone tell me why this happens and how to fix it? It hasn't happened for a few months, and it just happened again.

Thanks in advance...
I don;t drink or take any meds or drugs... Im 16 by the way.. I don't know what else to say...