Having chest pain near the heart what this could be please?

Many things: There are several causes for chest pain near the heart. The most serious include unstable angina/impending heart attack, heart attack (myocardial infarction), aortic dissection, and pulmonary embolism. Other causes include pericarditis, esophageal spasm, esophagitis, costochondritis, or gerd. Since many of these can feel similarly, and timing is vital, prompt medical evaluation is important.

Many possibilities: Dangerous: heart attack, blood clot to lung, ruptured aorta, cancer, pneumothorax, pneumonia, pericarditis. Not dangerous: reflux (acid), costochondritis (rib inflammation), strained muscle, pleurisy, pinched nerve in spine. Not enough info for me to tell what u have.