i need some serious help. my left pec is getting bigger then my right, it has been a little bit bigger now for a couple of years but its getting very noticeable now. its driving me crazy and most of the time when i work out chest my left one gets a better pump maybee because its a little bigger and more blood flow i dont know. all i do is dumbells so i dont understand it and now i trying so hard to fix my right pec my right arm is getting a little bigger, its like my pecs contract diff, my left comes up when i flex but my right goes down. the side pose is where you can tell the most, and the problem is my upper pec towards my shoulder, thats where the size diff is. also my left pec that is the bigger one is always tight, like i need to stretch it. I really need some advice, is this common with bb's, is this normal what do i do????