In men, urethral pain and a creamy yellow, bloody discharge from the penis is characteristic of the sexually transmitted infection:
gonorrhea. In men, the initial symptoms of gonorrhea include urethral pain and a creamy, yellow, sometimes bloody discharge. Candidiasis, trichomoniasis, and bacterial vaginosis are vaginal infections that can be sexually transmitted, and the male partner usually is asymptomatic. Chancroid causes genital ulcers; the lesions begin as macules, progress to pustules, and then rupture.