Finally got to see my actual doctor on Friday. Had to pay out of pocket since her new "office" (same office just under her ownership now) doesn't have a contract with my insurance provider, yet.
She doesn't think it is heart or lung, but a sprain/strain in area of my left side or something torn in that side, which almost certainly would be a work place injury. The day before this started, there was a lot of frantic action at work (Friday July 15th) and many instances of heavy lifting above my head, which can cause this type of injury.
She ordered more x-rays which need to be done at a different office and it was too late to do them Friday, so that will be Monday or Tuesday.
As this has progressed, it has fell more and more like a sprain than anything else. According to her, the location can often create misleading pain signals since so many nerves pass through that area, hence all the pain/burning/pins and needles in various parts of my left arm.
Well damn. Sending prayers and good vibes your way, Yankee...you've got me worried! Get well soon, damnit! LOL.