If you have taken medication before pregnancy and during pregnancy, you can determine whether the fetus is developing normally through regular obstetric examinations. Taking medication before or during pregnancy does not 100% indicate that there must be something wrong with the fetus. In addition to medication factors, genetic abnormalities, chromosomal abnormalities, and the effects of physical and chemical factors can cause abnormalities in the fetus. Regular checkups during pregnancy are an effective way to screen for fetal abnormalities. Down’s syndrome test and 4D ultrasound can be performed in early (11-13 weeks) and mid (20-24 weeks) pregnancy to understand the development of the fetus. If you experience any discomfort such as abnormal vaginal bleeding or abdominal pain during pregnancy, you should consult a doctor for examination in a timely manner, and you should not use any medication indiscriminately during pregnancy.