I am a 49 year old female. I have had issues with my neck, back and right shoulder for years (car wreck and rotator cuff injury). Over the last two weekends, I have done a tremendous amount of yard work, including lots of weed-pulling, raking, etc. Of course, now my body is aching, especially my lower back and left shoulder. The pain in my left shoulder seems to be radiating to the front of that shoulder area, feeling like a constant stinging or burning sensation on my front chest area, sorta even with my armpit area, but over somewhat, beneath my collar bone. Does this sound like something coming from my rotator cuff/shoulder area pain, from several hours of yard work? I guess I want to be sure it is not heart-related, on my left side. My blood pressure is good, around 120/80 or less.