If a woman takes cold medicine in the early stage of pregnancy, it will have certain effects on the growth and development of the fetus. First of all, the fetus is not particularly stable in the uterine cavity at the beginning of pregnancy, so if you take cold medicine, it may cause the fetus in the uterine cavity to be stimulated by the medicine, which may lead to the phenomenon of pre-eclampsia miscarriage. Secondly, the early stage of pregnancy is a critical period for fetal growth and development, and cold medicines have certain side effects that will be absorbed by the fetus along with the placenta, which may lead to fetal developmental malformations, such as cleft lip, congenital heart disease, and brain dysplasia. So women should avoid colds during pregnancy, and if the symptoms of a cold are serious, they must take medication under the guidance of a doctor to avoid affecting the normal development of the fetus, and to do a good job of maternity checks.