Has this happened to anyone else? I woke up on my back and half asleep,at first i thought i had growing pain but soon realised I was in a lot of pain, but it wasn't in my tummy, it was like at the back near my back, i was rubbing it quite a bit to try and ease the pain and eventually went back to sleep again on my side and i feel fine this morning. I keep cringing though whenever i think about it, it was that kind of pain! Im gunna read up on it as i m sure i've read that if you are on your back everything sits on a nerve which isnt good!