(GALL BLADER STONES)
Gallstones are hardened deposits of digestive fluid that can form in your gallbladder. Your gallbladder is a small, pear-shaped organ on the right side of your abdomen, just beneath your liver. The gallbladder holds a digestive fluid called bile that's released into your small intestine.
Gallstones range in size from as small as a grain of sand to as large as a golf ball. Some people develop just one gallstone, while others develop many gallstones at the same time.
Gallstones may cause no signs or symptoms. If a gallstone lodges in a duct and causes a blockage, the resulting signs and symptoms may include:
Sudden and rapidly intensifying pain in the upper right portion of your abdomen
Sudden and rapidly intensifying pain in the center of your abdomen, just below your breastbone
Back pain between your shoulder blades
Pain in your right shoulder
Nausea or vomiting