Trichomoniasis-What Happens Trichomoniasis (trich) infection is spread when you have unprotected sex with an infected partner. Many women and most men do not have any symptoms of trich. If symptoms appear, they usually start within 1 week after a person is infected. But it may take up to a month for symptoms to appear. In most cases, trich should be treated to prevent transmitting this sexually transmitted infection (STI) to others and to prevent some problems that can happen if you are pregnant. You and your sex partner(s) should be treated for trich at the same time, to avoid reinfecting each other.

Trich during pregnancy raises the risk of premature rupture of membranes (PROM) and premature delivery. Treating the infection doesn't appear to reduce this risk.³ If you are pregnant and have trich, talk to your doctor about the pros and cons of treatment.

Trich may be transmitted from a mother to her baby during a vaginal delivery, but this is rare.