When I lay on my left side, the bottom rib hurts. Even if I sleep on my other side, if I roll over in the middle of the night, the pain wakes me up. I was handling frozen ground beef (breaking it up to thaw it out) tonight around 4:30 and it hurt again, while I was standing up. This has been going on for about six months. I told my regular physician and she said, Then don t lay on that side . DUH!