I was eating at a restaurant and started feeling a few stomach cramps. This is not unusual as I have IBS. When I went to the restroom, I started experiencing my IBS cramps but this time it was accompanied by an extreme, sharp, immobilizing cramp up my left abdomen and under the lower half of my left ribcage. I nearly vomitted from the pain and became extremely sweaty. I was able to pass a normal stool. No diarrhea. Since then I have had a mild sharp pain under my lower left rib cage.