I asturbated last night before i went to bed it was acutally very early in the morning. I am at work i used the bathroom and i noticed that the forsking right behind the penis head or pines is swollen on the left hand side of the penis. should i be worried or will it go down? there is no pain associated with this swollen area it is not red. It kind of looks like a water bump or something it is quite large. should i go to the doctor. or will it go away on its own. i have no problem urinating. though