Hello, I got urine infection with fever and pain a month back. I met with GP and he advised me to do urine routine, blood test and urine culture. The urine routine confirmed the numerous pus cells and culture citrobacter koseri. The doctor gave me ciprofloxacine, 500mg*2 for five days. I have 7.5 mm renal stone in my left kidney. I went to the Urologist he advised agin the urine, CBC, KUB x-ray and ultrasound. everything was found well and stone in resting positing in lower pole. However, i continued feeling slight pain after urination, pain in the head part of penis, and watery colourless seman. Again I met with the Urologist he advised urine test, PSA test and culture. He also examined my prostate physically. Now there are some pus and blood cells in urine. The PSA is 3.7 and culture in negative. He gave me Ofloxacine 400mg*2 for 7 days. I have still some pain in upper part of the penis and seman comes out sometime after urination. He prescribed ofloxacine further 7 days and advise me to do IVP. What could be the reason for my infection?