Anybody ever experience something like this? If I get too hungry, pain starts in my lower back, I assume in my kidneys, and radiates around to the rest of my abdomen. It will feel like a giant hand is squeezing me around the waist. It hurts pretty bad. It doesn't happen very frequently as I make sure to eat regular meals most of the time, and keep my body on a pretty regular eating schedule (breakfast at 6am, morning snack around 9:30am, lunch at 11:00am or so, snack around 3:00pm when I'm going home, and dinner at 5-7pm, and sometimes a snack at night). It happens sometimes in the middle of the night, and other times at work if I don't eat a granola bar in time. Once it happened in the morning while I was driving to work and it hurt so much it was all I could do to concentrate on driving. I do drink plenty of water. This never happened before I had my gallbladder surgery, and my friend's husband said the same thing happens to him sometimes, and he has also had gallbladder surgery, so I've been wondering if it could be related to that. Google searches have revealed nothing useful. Oh and one other weird thing, if it happens in the middle of the night, I get out my heating pad and lay with it on my lower back, and the pain goes away (all I'm thinking about in the middle of the night is a way to make the pain stop as quickly as possible so I can go back to sleep, and this works faster than walking downstairs to get food)! The only thing that makes the pain go away besides eating something if I feel it start up, is laying on my heating pad.