What are symptoms of gallstones?

Gallstones: Gallstones are made of various crystal that grow into stones in the gallbladder. They can be from bile (bilirubin) or cholesterol origin. They grow in the gallbladder, may be present without any symptoms, or may cause upper abdominal pressure, bloating, discomfort, nausea, or vomiting. Often eating fatty foods may aggravate the discomfort from gallstones.