I am a women in my early 60s, no health issues. I do take metropolol and amiolopidine for BP.. Wjen i taking a walk, at about a mile, i get a pain in my upper back between the shoulder blade and spine on the left side. It Can get quite intense, and if i stop and rest a couple minute it lightens up, but quickly returns when i start back up. My destination is about a mile and 1/4, so if i rest before i start back home, it will not Show up until i am almost home. Oh, i also have some reflux i control with prilosec.