The basic line is that trichomoniasis can be present for months without causing symptoms. If you or your spouse develops symptoms or tests positive for them, it does not always imply that someone is cheating. Either spouse might have picked it up in a prior relationship and unwittingly passed it on. Trichomoniasis causes no physical harm to its host and is rarely fatal. It is typically treated with antibiotics if left untreated it may cause severe vaginal infections that could lead to infertility. If you suspect you or your partner may have trichomoniasis, ask your doctor about testing. The easiest way to confirm the diagnosis is through a urine test. Your doctor will also want to conduct a physical examination of both of you in order to look for other signs of infection. If you don't have a doctor, call a clinic or health center that provides this service. They will be able to advise you on the best place to go for treatment.