My lower back hurts when I lay down..
It normally doesn't hurt when I stand up or sit down but when I lay down it hurts a lot. What could be causing this? (I have asthma)(also, my ribs stick out, but not because I'm skinny..I am not really skinny they just naturally stick out) (and I've brused my tail bone for about 5months before) Is there something wrong with my back? its been like this for a year now, and im not overweight I'm average. What could be making my back hurt?