What could this be!?
I was randomly feeling my chest/pectoral area - on the RIGHT side, and I felt this very sudden sharp, tender, sore spot in my chest wall. It's not close to the sternum, so I wasn't thinking costochondritis. It is a very specific spot that hurts with sharp pain when pressed with a finger. Then it almost feels hot too. Now that I've pressed on it, there is mild lingering pain.
Could it be a strained muscle, compressed nerve, sore lymph node, or maybe a fibromyalgia symptom? I don't see or feel anything, marks, lumps or bumps, but it feels like a really tender bruise.