2. Dull Pain in the Upper Right Abdomen
Gallstones are small, hard “pebbles” formed in your body from fats, proteins, and minerals. Gallstones obstruct the bile duct or tube, causing a gallbladder attack. Bile builds up in the gallbladder when this happens. Pain is caused by obstruction and edema. When the gallstones move and bile can flow out, the attack usually ends.