What are the symptoms of a gallstone attack?

Biliary Colic: Gallbladder attacks cause a very classic constant, noncramping pressure like pain in the right upper abdomen or mid-abdomen. The pain often radiates around into the right back +/-shoulder; nausea+/-vomiting+/-fever+/-chills may occur, as well. Typically the pain is precipitated by food, especially fatty/fried ones. Typical attacks may last hour(s) and often resolve as quickly as they begin.

Gallstone symptoms.: Generally gallstones cause a gripping or squeezing discomfort in the upper right part of your abdomen, under the right ribs, associated with nausea. This would occur about two hours after eating, particularly a fatty meal. This is called biliary colic.