When vaginitis is present during pregnancy, it usually does not affect the health of the fetus if it is not severe. If the vaginitis is serious, it can lead to retrograde bacterial infection, which can easily cause pelvic inflammatory disease, which can affect the growth of the fetus and may infect the fetus leading to intrauterine infection. If vaginitis is detected, it should be treated promptly to control the development of the disease to avoid affecting the health and growth of the fetus. If vaginitis is not treated in time during pregnancy, it can also affect the delivery of the baby, which may be infected during the delivery and lead to thrush, keratitis and sclerositis after birth. During pregnancy, you should try to pay attention to hygiene and washing, and if you have vaginitis, try to treat it with intravaginal medication rather than oral medication.