The week before, I was playing cricket. During the game, a ball hit me on lower part of my penis. I got pain medicine for it, but now my semen is very unclear, like a brown color. I want to ask you if there any major problem?
Most likely there isn't a problem, but I would suggest that you check with your doctor. It is common after a blow for blood to get into your semen, which is what is causing the brown color. It should fade after a while and go back to normal as your internal organs heal. If the brown color continues for more than a week or if you have increased pain or a fever, you definitely should go see your doctor.