I was not able to successfully perform sex for 3 days due to unable to stay firm required for penetration. this started especially i bike ride.

Depends on saddle: Depending on how you cycle, how long you have been cycling, and the fit of the saddle, it seems that you can develop this problem. The topic is debated, however, and so it is hard to draw firm conclusions. See http://sportsmedicine.about.com/od/cyclingworkouts/a/BikingImpotence.htm and talk to your doctor / Urologist about your symptoms. Good Luck! Thanks for using HealthTap.