What problem could cause lower chest pain on the right side?

Right lower chest pa. Here is the list:1.Rib cage. 2.Skin (herpes zoster) 3.Gall bladder.4.Irritable bowel. 5. Pneumonia. 6.Pleurisy. 7.Tumors. 8.Intercostal muscles.As you see, there are many possible reasons and in the clinical context one can make a better conclusion.
Too numerous to list. Some of them could be a lung infection (pneumonia), bronchitis, pulmonary embolus, chest trauma, muscle spasm, shingles, pleurodynia (viral infection of the pleura), rib fracture, muscle tear, gallstones, hepatitis, heart failure, asthma attack, emphysema, thoracic spine disease with nerve root compression.