My wife had her surgery on 12/1 and had a good 2 days post op, not hungry, no unbearable pain. Then on Sat., terrible pain. Turns out she was swollen too much that water was not getting through. So they took out 0.5 cc (she started with 5 cc). Since then, she has been doing very well, with no hunger. She has been subsisting on water, broth, crystal lite, and recently started the protein shakes. Those have been making her very full. At her 1st post op follow-up, the dr. found that she was dehydrated and had not been getting enough water. Apparently she was being too careful about the sips she was taking that she was introducing too much air and also not getting enough water.