Get pain under my breast bone on the left side it is sharp that last between s few seconds and a few minutes?

Sharp pains under: the sternum or breast bone can be from many different things, but more importantly they need to go away and not bother you. If they don't, then you need to get some help from a healthcare provider. At your age the most common cause for sharp pains is costochondritis which is an inflammation in the cartilage connecting the ribs to the sternum. No one knows the cause. But you can also have othe