Can prostatitis result in yellow semen?

Possibly: There could be some blood or pus in the semen from prostate inflammation, which could cause discoloration.

Possibly: Pain in the perineum, the region between the anus and the scrotum, frequency, urgency and slowing of the urinary stream with a possible fever are consistent with acute prostatitis. One may see purulent discharge or yellowish ejaculate in this circumstance. This is uncommon occurring in about 5% of the prostatitis cases. More common is chronic prostatitis which would be without a fever or prostatodynia.