Anxiety Support Group
Anxiety is a physical condition marked by intense and persistent feelings of distress, fear, angst or dread. General anxiety caused by routine day-to-day stresses usually passes quickly and is experienced by almost everyone at one time or another. However, such feelings that linger over time and are very difficult to cope with, and which lack a clear cause, may indicate...

G.
It might just be anxiety. I had chest pains directly over my heart for a couple years. Ultimately, it was the anxiety, but I'm still glad I went for tests, just to be sure.
With anxiety, remembering that it is natural and that movement will release the physical symptoms fast naturally can give you a way to work through the sensations.
Best wishes.