hi am 52 male , i had a history of blood in urine , a year back i had an abdomen sonar indicated a mild prostate enlargement , symptoms were frequent urinating and from that time urine color became darker constantly . PSA was negative , after that during hot summer symptoms were less , now we started autumn the symptoms came again , last urine analysis indicated 6-8 RBC and 3-5 HPF , i suspect of some infection could be due to wife after intercourse , she had vaginal tablets of gyno daktarin and she became better . pls let me know if any preventive actions can be taken to reduce the blood in urine . many thanks