Im 14 Year Old, Male. And My Left Side Of

Im 14 year old, male. And my left side of my chest sticks out father than the other. Now, I don't go to Gym or workout with weights and what-not. But, it worries me. Sometimes I wonder... Will it bend in and stab my heart? Will it stay like this forever? Is it just puberty? Is there anyway I can get rid of it? Will it even out when I get older? I believe I am 5,4 in height and about 102 Lbs, if that helps you any.
-Jerry