There are numerous vital organs on the left side of the body. Under the left breastbone are the heart, spleen, stomach, pancreas, and large intestine. When you have chest pain on the left side above your breast, it can be caused by a variety of things.

What side is a woman's heart on?

The heart is in the chest, slightly left of center. It sits behind the breastbone and between the lungs. The heart has four distinct chambers. The left and right atria are at the top, and the left and right ventricles at the bottom.

Which side is heart on?

Your Heart is Not on the Left Side of Your Chest

Although most of us place our right hand on our left chest when we pledge allegiance to the flag, we really should be placing it over the center of our chest, because that's where our hearts sit. Your heart is in middle of your chest, in between your right and left lung.