I recently had unprotected sex, and the head of my penis is very tender on the left side. We had sex for a very long time and she was not well lubricated. An hour after we finished I noticed that the tip of my penis was sore and tender, I passed it off because I figured it was from so much friction. It has been tender for over a week now and I'm starting to worry about it. Does it take a long time for the penis to heal from this? I have no lumps, lesions, or any swelling. Everything looks normal, it's just very tender. It does not hurt much at all in the moring but as the day goes on it gets worse, I beleive it's from the penis rubbing against my boxers all day and from the anxiety. Should I seek medical help for this? What can I do to help heal the area?