If you are a woman and you are experiencing any of the following symptoms, it is important to see your doctor for further evaluation: vaginal discharge that is watery, yellow, or green; burning when you urinate; itching; painful intercourse. Trichomoniasis is a parasitic infection that can be caused by the Trichomonas vaginalis bacterium. The parasite can spread from one woman to another through sexual contact, which means that if you think you may have contracted the infection, it is important to get tested. If trichomoniasis is diagnosed, treatment typically involves taking antibiotics for two weeks. If the infection is not treated, there can be serious consequences including pelvic inflammatory disease (PID), ectopic pregnancy, and even infertility.