The use of drugs during pregnancy may lead to genetic mutations in the baby, resulting in fetal malformations. There are many causes of fetal gene mutation, the common one is heredity, such as both parents have hereditary diseases, the disease-causing genes will be passed on to the fetus, then it will cause the fetus to have a gene mutation, which is the most common in the clinic. Secondly, if the mother is frequently exposed to radiation in the early stages of pregnancy, this may also lead to genetic mutations in the fetus. The use of medication during pregnancy is equivalent to exposure to chemicals, which may lead to fetal genetic mutations in early pregnancy or cause fetal malformations, such as the use of retinoic acid drugs during pregnancy, which is likely to lead to fetal cardiovascular malformations, and will increase the chances of fetal miscarriage and fetal death. Unauthorized use of medication during pregnancy is not recommended, you should seek medical advice before using medication, and you need to strictly follow the doctor’s instructions for the use of medication.