I had blood in urine on June 14th and pain urinating. Went on antibotics that my doc called in as I was out of town. When I got back into town got urine test, but showed no infection We are now at July 8th, have pressure in lower area a vibrating feeling in the pee area, and some lower back pain, some feelings of having to go to the bath room, I do go, but not as much as I would think for how I feel, any clues. Doc is wanting to do a Cat Scan with and with out contrast. I am just concerned as to what this could be. Any ideas?