It's like a dull pain or like a burning sensation on the left side of the stomach and pinpoint pain in the back near the spine on the back side from lyast few days.There are many  small round pea shaped like thing on both sides of stomach (from  lungs to navel).but on the left it's tender to touch and slightly painfull to touch. It is only on left side. No pain and tenderness on the right side of the stomach .