The gallbladder is located in the upper right part of the abdomen, and its main function is to serve as a reservoir for bile coming from the liver, to be delivered through the bile ducts to the duodenum when it is needed for the digestion of some foods. Problems can occur when the outlet duct into the bile duct is partially or completely obstructed, accumulating bile inside, distending, and causing pain or inflammation of the gallbladder. 
Symptoms of gall bladder attack usually appear after meals, especially if they are heavy or high in fat. The main ones are:
Severe Pain on the Right Side of the Belly within 1 Hour after Eating
The main symptom of gallbladder stone is biliary colic, which is sudden and severe pain on the right side of the abdomen. This pain comes on suddenly and gets worse quickly by spreading. It may radiate to the epigastrium, or around the lower ribs, or directly through to the back. Usually, this pain appears about 30 minutes to 1h after the meal, but it passes after the digestion of food ends, as the vesicle is no longer stimulated to release bile. 
Other symptoms might be other forms of digestive problems, including indigestion, heartburn, and gas. It is important that the stone in the gallbladder is identified quickly by means of imaging tests and, thus, treatment is started, which can be done with the use of medicines to dissolve the stones or surgery, depending on the amount of stones and the frequency symptoms happen.