Gallbladder

Gallstones are incredibly painful stones that form in the gallbladder, the organ responsible for storing bile, which helps the liver with digestion. When stones block the gallbladder’s drainage system, it can cause inflammation and be extremely painful. It may need immediate surgery.
If you have severe pain in the upper right part of your abdomen, particularly after eating, and you’re nauseous, you may have gallstones. These are common but sometimes they get stuck and block the gallbladder exit, causing it to become inflamed and sometimes infected.