I have also had a constant pain in my left shoulder
, deep on the inside, as well as pain
in my upper back. Sometimes I have body aches that make me feel like I have the flu. I also have a dull pain in my left jaw and sometimes pain radiating down my neck. My doctor has run several tests including thyroid function, glucose, and some neurological studies. Everything comes back perfect, but I still feel bad.
Could this be a heart condition?