When I stretch out my right pec, lift my right arm sideways and past 90 degrees, there's an intense pain in my right pec that radiates along the sternum and goes away after I either complete the movement or hold the position. Also, there seems to be a weird dent along the entire length of my entire right pec when I raise my arm and flex my biceps, in between the third and second rib all the way to my shoulder, that seems to just have nothing under the skin. I am still able to lift weights without problem and I am wondering if this is a rare pec tear of the sternum?