Thanks for the input. I do use a treadmill and thought I was building stamina slowly since surgery, where I started with walking and incremented treadmill speed minimally over many weeks. I also utilize a high quality running shoe. I’ll keep you posted on findings from doctor visit. At this point I am just keeping my routine focused on walking and eliptical and no further issues have surfaced since backing off the running routine. Hesitant to create further complications with running. Doctor plans further tests during my next PSA screening visit at end of July.