This does not happen a lot at all, and I am not pregnant btw, but when it does happen it hurts like hell! Sometimes after or during a meal, my spine will begin to hurt really bad and ache, as if it needs to be adjusted. I need to sit down because of the throbbing continuous ache, and it stays for at least an hour or 2. Its not my organs either, its like Im dehydrated or thr disks in my spine are deflated and my bones are touching. Its not really a sharp pain, but its enough to make me want to ask a doctor... or you know.... the web.. thanks girls!