20 male here, for the past couple of days I've been feeling something strange on my left ribs. The best way I could describe it is a sort of ticklish/tingling feeling. It sort of feels the way my right ribs feel if I gently push down with my hand. It feels as if it is under my pectoral muscle and above my ribs, almost under my nipple. If I apply gentle pressure near where I feel it, I can feel it pushing down on my ribs. I'm only feeling a ticklish/tingling sensation, no pain or other symptoms. What could this be? I wanna have some idea of what I could be dealing with here...