Have been having pain on side of left breast and under arm for couple weeks also left shoulder blade. Had mammogram and of course I was called back but for more views of my right breast. The pain used to come and go but is constant now and have a mole on my shoulder blade where it hurts too.Im freaking myself out that not only do I have to go back for another mammogram but that my pain on my left side is from skin cancer from the mole on my shoulder blade.