Gonorrhea is a sexually transmitted disease caused by the bacterium Neisseria gonorrhoeae. It is transmitted through vaginal, oral and anal sex. The most common symptoms are white-yellow or yellow-green vaginal discharge, burning during urination and damage to the vulva. It needs to be treated because otherwise it can spread to internal organs, such as the uterus, fallopian tubes and ovaries. Once it spreads, inflammation can occur, and symptoms include pelvic pain, cramps and fever. Sometimes signs of peritonitis, nausea and vomiting also occur. After a long time, the fallopian tubes can become blocked, and therefore infertility.