@allenJo - I believe that it’s in the center, but only slightly towards the left. It’s not far off to the left by any means. It’s behind your lungs and your sternum.
If you have chest pains of any kind, I would get it checked by a doctor and not try to rule out what it could be, simply because of the location of the pain.
Heart pain can manifest itself in a variety of locations. Real heart conditions will usually result in pain that radiates up and down your arm, and your heart certainly isn’t located there.