I had a robotic pyloplasty in Nov 2013(had crossed vessels.) i had a stent in for 6 weeks following surgery, and during that time i had 3-4 uti s. after my stent removal i had several more uti s. I recently I am having the flank pain symptoms, bladder infection symptoms, nausea,burning or pulsing pain traveling down left side and fatigue. I had a renal scan done the other day and they re results stated the I had upj obstruction again. However, my urologist doesn t think so.he thinks that it is a muscular prob. I don t understand how I can have a back prob. When I have all of the same symptoms as I did prior to surgery. I can t take this pain. What should I do?