If a mycobacterial infection occurs during pregnancy, it is not recommended to use random medication when the condition is not severe. During this period, the condition should be determined according to the individual’s clinical symptoms and then combined with routine leucorrhea examination. If the condition is too serious it should be treated with medication in time, otherwise it will lead to retrograde infection, resulting in inflammation in the uterine cavity and affecting the growth and development of the fetus. This can cause fetal growth retardation in the uterine cavity, ischemia and hypoxia in the uterine cavity, and even fetal asphyxia. If mycosis is too serious during pregnancy, you can use nifurtimox vaginal suppositories to insert into the vagina, which have a direct bactericidal effect through local absorption in the vagina and will not affect the fetal growth and development.