I have experienced pain in my back for as long as I can remember. I experience pain that I know is definitely caused by my breasts when I stand for too long or do not have adequate support. However, I also experience soreness, particularly in my shoulders, constantly. I have tried many things to eliminate this (including getting a new mattress, exercising, massages, stretching), but any relief is short lived. How can I tell if my breast size is the culprit here?