<s>[INST] Every time I defecate I pass a few drops of brown blood from my penis.  My semen has also been brown coloured on a few occasions.  I have had a blood test and this has shown me to be negative of sexual diseases including HIV/aids.  I await a PSA test and an echograph (?) scan in a months time.  Any clues please as to what might be the problem? [/INST] Hello, As per your history, it may be due to urinary tract infection. For further assessment you may require ultrasound abdomen, complete hologram, urinalysis after physician consultation. Treatment mainly depends upon the underlying condition. Till that for pain you can take tablet acetaminophen. Keep your self HY Chat Doctor.  Hope I have answered your query. Let me know if I can assist you further.   </s>