If you have a cold at the beginning of your pregnancy, do not use medication, as it will have an effect on the fertilized egg. You can take conservative treatment, drink more water, eat more fresh fruits, vegetables and so on. Pregnant women should pay attention to colds. Colds have two effects on the fetus: First, the direct effect of viruses. Viruses can enter the fetus through the placental barrier, which may cause fetal congenital heart disease, as well as anencephaly and microcephaly. Second, the indirect effects of the toxins produced by the high fever and metabolic disorders caused by colds can stimulate uterine contractions in pregnant women, resulting in miscarriage and preterm labor. The mortality rate of newborns will also increase as a result, so pregnant women should pay attention to the prevention of colds in the first three months of pregnancy, and during the period of fetal formation. In case of colds, it is best to take treatment under the guidance of a doctor. Do not use medication on your own, so as not to affect the pregnant woman and the fetus.