Urethral fluid. What's going on?

Urethral fluid, to consider the color of the liquid, nature or amount of liquid. First, if the yellow pus flow, first consider whether it is urethral inflammation caused by purulent symptoms. Second, if the liquid is red, consider whether there is occult blood, to timely hospital examination, because do not rule out kidney problems, such as acute pyelonephritis, will also show hematuria.