Although metronidazole is a prohibited drug for pregnant women, the effects on the fetus may vary depending on the specific dose and duration of the metronidazole dose. In the early stages of pregnancy when the fertilized egg has not yet settled in the uterine cavity for growth, if only 1-2 metronidazole pills are taken, the effect on the embryo is usually not significant because the dose of metronidazole is relatively low and the embryo has not yet reached the uterine cavity. The pregnancy can be considered if the woman has a strong desire to have children. If a woman takes high dose metronidazole tablets during the 12 weeks of pregnancy when the fertilized egg is in the uterus, it is advisable to abandon the pregnancy and terminate it by abortion after the diagnosis of intrauterine pregnancy.