i have just ended my first cycle and for some reason my left pec is bigger then my right peck, is this a sign of gyno, can on side of your chest get gyno and not the other, it is not sore or anything at the nipple, but sore about mid chest towards the outside of my pec. I went to the head athletic trainer at my school and he said he could find it to be a tear, but i get sore on that side when i do chest. what should i do?