I had a turp procedure by a very qualified Urologist Surgeon at HUP in Phila. approx. 4 1/2 mos. ago. I am now doing stretching excercies including treadmill / fast walking for 40 minutes for a lower back problem as prescribed by a rehab specialist also at HUP. For the 1st time since my prostate operation I am now voiding clots & have burning & I think it is a "cause & effect" of this somewhat aggressive stretching exercises. I will call my Urologist tomorrow but wondering if it takes this long to heal well enough to return to exercising & stretching (lower back).Thanks. Cliff Samuelsen