What Are Gall Bladder stones?
Gallstones are dense particles that develop in the gallbladder, a small organ under the liver. If you have them, your doctor will diagnose you with cholelithiasis.

To aid digestion, your gallbladder stores and releases bile, a fluid produced by your liver. Bile also transports wastes such as cholesterol and bilirubin, which the body produces when red blood cells are broken down. Gallstones may develop as a result of these factors. You can not realise you have them until they block a bile duct, causing discomfort that requires immediate care.

Symptoms
Gallstones may not be accompanied by any symptoms. When a gallstone becomes lodged in a duct and causes a blockage,

The following signs and symptoms may occur:

Pain in the upper right quadrant of your abdomen that is sudden and rapidly intensifying Pain in the centre of your abdomen, just below your breastbone, that is sudden and rapidly intensifying Back ache between the shoulder blades Your right shoulder is hurting.
Vomiting or nausea Gallstone pain can last anywhere from a few minutes to a few hours.