If a pregnant woman develops a severe cold in the first month, there is a possibility that it may affect the fetus. The first trimester of pregnancy is a sensitive period, during which the chances of miscarriage and fetal malformation are higher. If a pregnant woman only has a mild common cold and does not have a high fever, shock or other complications, it will not affect the fetus. However, if the patient develops a more serious viral infection and has a high fever that does not go away, it may affect the fetus, resulting in preeclampsia, developmental abnormalities, fetal arrest, and so on. If a pregnant woman has symptoms of a cold, she should go to a regular hospital in time and undergo a detailed examination to clarify her condition and then carry out targeted treatment. At the same time, pregnant women should pay attention to rest, avoid strenuous exercise or overwork, in the epidemic period, pay attention to personal hygiene, it is best not to go to densely populated places, do not contact with patients with colds and so on.