Hello Dr, I am experiencing a dull pain, to sometimes excruciating pain in the left of my chest,this continues up into left shoulder and down arm. Left arm feels absolutely usless after this pain subsides, and has has a heavy feeling. I also get like a prickly hot flush at this time,and feel so drained and stressed by all of this. What so you think could be triggering all of this, and what should I be doing.