Pain on the right side of my stomach?

Many possibilities: Thus, a doctor should examine. A simple tummy ache with symptoms like nausea, vomiting, or diarrhea, may be from a viral or a bacterial infection, or contaminated food. A normal person not on medications usually recovers easily. Taking a Pedialyte popsicle or 2-3 oz of Pedialyte hourly, and drinking little else for a day, helps some people. Also, liver or gallstone problems cause right tummy pain.