During pregnancy, when a pregnant woman has a cold and fever, different treatment measures should be taken depending on the length of pregnancy. In the early stage of pregnancy, which is mainly the time when the embryonic organs of the fetus are developing and forming, if you suffer from a cold and have severe symptoms, it will have a greater impact on the fetus. After pregnancy, there are certain changes in enzymes in pregnant women, which have certain effects on the metabolic process of certain drugs, which are not easily detoxified and excreted, and there can be accumulative poisoning. In early pregnancy when the fetal organs are formed, drugs have a certain impact on the fetus, so it is best not to take drugs for colds, and there are certain risks for pregnant women to use drugs. However, it is not entirely unhelpful, some diseases themselves affect the fetus and the mother much more than the drugs do. This is when the pros and cons should be weighed and the medication should be used wisely under the guidance of a doctor. It is advisable to always pay attention to warm measures during pregnancy and try to avoid fever and cold.