HI...I am a 64 year old healthy male who takes only a multivitamin, fish oil capsule, and lutein tablet for eye heatlh. I am divorced for 2 years and met a wonderful lady with whom I have frequent intercourse. I began having a slight discharge from my urethrea several weeks ago and went to see my family physician who did a battery of tests for STDs of which all were negative. He prescribed a 7 day regimen of Cipro and Dioxycline which I finished taking both about 2 weeks ago. I still have a tickling sensation at the end of my penis and some minor itching towards my anus area and, although I can achieve an erection for a couple of minutes, it remains only partially erect when attempting intercourse. My doctor has given me samples of an ED pill which I have not used yet. I am wondering what could be causing this tickling effect and could that also be related to the reduction in my ability to maintain an erection, as I have not had this problem in the past? Thanks....