of your stomach lining, called gastritis
Stomach ulcer
Bile reflux
Stomach cancer
Kidney infection
Kidney stone

Pain in this part of your abdomen can also start in your chest because of:

Heartburn
Angina, or chest  pain caused by coronary artery disease
Chest pain not related to your heart
Heart attack
Inflammation of the tissue that surrounds your heart, called pericarditis
Pneumonia
Inflammation of the lining of your lungs, called pleurisy
Pulmonary embolism

Abdominal Pain on Right Side

If you have pain in your lower right abdomen, it could mean