It sounds a bit like the gallbladder
pain I had. I had no appetite, nausea and
vomiting. I had more
pain in the
back than the front, and I found a little relief by leaning my back against a wall. I was doubled over in pain at times when I was having an actual gallbladder attack after eating two bites of cheesecake at a party. The attack pain lasted 30 hours, but by that time I had already had the gallstones seen on an ultrasound.