I have a sit down desk job and I noticed about ten days ago some pain coming from the left side of my back next to the spine by the bottom of the shoulder blade. This pain is piercing into my heart. I cannot tell if because of how I sit could be causing the issue however the pain comes all the way from my back through the front of my chest. Nsaids work well to aleviate the problem. when I lay down on my left side on the couch the pain gets much worse and feels like its coming through my heart. I am unsure whether its my back or my heart or if its a nerve that could be pinched because of how I sit all day. When i sit up straight I am okay. What are your thoughts? thank you, Lorre