Most people who have had sudden stomachaches have always ended up in the operating room. The main reason is because their appendix had to be removed. This small pouch which no one knows why it is in our bodies in the first place can be the source of excruciating pain when it swells.
Appendicitis typically starts with a pain in the middle of your tummy (abdomen) that may come and go.
Within hours, the pain travels to the lower right-hand side, where the appendix usually lies, and becomes constant and severe.
Pressing on this area, coughing, or walking may all make the pain worse.