Nov 02, · The most common cause of green vaginal discharge is a sexually transmitted infection known as trichomoniasis. The discharge often has a foul odor and is typically more yellowish-green than pure green. Intercourse and urination may cause discomfort, and the genital area may be itchy. Pelvic pain may also occur but is not common. Nov 18, · A smelly (fishy) green discharge is a common sign of an infection with Trichomonas vaginalis. This infection is caused by sexual activity with another infected person through contact of mucous membranes. It transmits through vagino-vaginal contact or penile-vaginal contact since it tends to colonize the genitals.
Feb 01, · Green discharge sometimes may be produced by chlamydia, a common STD among women. It is caused by chlamydia trachomatis, which is a type of bacterium. There are about 3 million new cases of chlamydia every year in the US, according to the CDC.