I was getting gallbladder attacks that were more off to my right side, not my left, that I also worried were heart attacks. it felt tight across my mid back. I spent a year eating pretty much just bran flakes and soy milk - that was all I could stand to eat, I was pretty nauseated too. I was under a LOT of stress at the time. and yeah it was a terribly sharp pain, enough to wake you up. gallbladder is nothing to fool around with, if the pain doesn't let up, do go to the dr, I know of a guy who let it go for like a week or more ie in bad pain the whole time, who ended up dying from it.