Hi Im A Male Thats 54 Years Old. Have Not

Hi Im a male thats 54 years old. Have not had sex in any form in last 7 years. I masturbate 2 or 3 times a month. I take a bath everyday. Change underwear daily. The problem Im having is that the last 3 days the inside of my penis itches. I dont see any puss. I urinate regularly with out any pain or burning. It just feels I have to itch it all the time. What can I do to resolve this?