Bacterial vaginitis is a sexually transmitted disease caused by a variety of bacterial infections. It is one of the common diseases among women of reproductive age and accounts for 1/3 of vaginal infections. Can bacterial vaginitis affect the fetus if I get pregnant? Bacterial vaginitis may cause infertility Under normal circumstances, the vagina has a balanced flora and pH level (pH is approximately between 3.8 and 4.5). This environment, which is suitable for the temporary retention and passage of sperm, is very important and once this environment is disrupted, infertility can easily occur. In the case of bacterial vaginitis, the pH of the vagina can exceed 4.5. The change in the pH of the vaginal environment can inhibit sperm motility. In addition, the pathogenic bacteria will engulf the sperm, and when you have bacterial vaginitis, there is a large increase in vaginal secretions and the secretions contain a large number of white blood cells, all of which will prevent the sperm from becoming viable and reduce the number of sperm. Those who have low sperm count and poor motility are likely to cause infertility. In addition, once the inflammation goes upstream and infects the uterine cavity, causing tubitis and pelvic inflammatory disease, it will also cause infertility. Of course, if treated aggressively, it is possible to get pregnant again. Bacterial vaginitis can also affect the development of the fetus. Bacterial vaginitis can be very harmful to the patient herself. In addition to causing problems for the reproductive health of the mother, severe bacterial infections can affect normal work and study. The risk increases during pregnancy because it can also endanger the fetus, causing fetal disturbances in some cases, or premature birth or miscarriage in others. It has been reported that the percentage of puerperal infections, neonatal infections and neonatal jaundice are significantly higher in cases of bacterial vaginosis during pregnancy, 14.3%, 9.5% and 23.8% respectively, which are several times higher than normal pregnant women, directly threatening the development and health of the fetus.