If there is a previous history of chest tightness and you are currently well, you should visit a respiratory medicine or cardiology department. Ruling out cardiac and pulmonary pathology, along with gastrointestinal symptoms such as belching, acid reflux and epigastric distention, consult a gastroenterologist. Excluding heart and lung pathology, pregnant women may visit the obstetrics department.
If accompanied by severe symptoms such as shock, 120 should be called promptly.