Suggest Treatment For Skin Rashes And Tiredness

Hello, Dr: I am 39 years old. Recently had a complete physical (not including prostate due to lack of symptoms, I think). Everything is in order. However, 3 days ago I noticed my semen is brown. It has not stopped since then. I do not have any symptoms of anything whatsoever. The only thing out of the ordinary that happened to me was that last week I had the Zika virus. The only symptom that came with this was the skin rash and only a little muscle tiredness, but nothing out of the ordinary. I am very concerned about the brown semen. I am not sexually active and relieve myself once every 2 weeks or so, on average, but not much more than that. Please help me Thanks, V