When a pregnant woman has a viral cold during pregnancy, whether it will affect the fetus needs to be judged according to the severity of the viral cold, there are several situations: 1. If the symptoms of viral cold are mild, and the patient does not have high fever and other complications, it will not affect the fetus. 2. If the symptoms of viral flu are serious, such as a high fever that does not go away, it will have an impact on the growth and development of the fetus, and may lead to growth deformities in the fetus. If the viral cold has complications, such as viral myocarditis and viral pneumonia, it may lead to pre-eclampsia, so if you have a viral cold during pregnancy, you should pay attention to drink more water and seek medical attention in a timely manner.