After 10-15 min (yesterday was
after 30 min) of speed walking or light
jogging, I get right upper chest
pain. It feels slightly tight, with a sharp pain. So I slow down immediately, and after 2-5 min of slow walking I feel much better. Then I continue to speed walk/jog, and this time the pain doesn't come back again. I am thinking it might be the heat or the humidity causing me to feel short of breath and these chest pains.