Women in the early stages of pregnancy are usually susceptible to viruses, is there any effect on the fetus in this case? Pregnant women who have a cold should be treated in several cases. A cold but not a fever, or a fever with a temperature not exceeding 38°C, can be treated without treatment and will not have any effect on the fetus. If a pregnant woman has symptoms such as cough, it usually does not affect the development of the fetus, but when the condition is serious, it may have an adverse effect on the fetus. You can use medicines that will not affect the fetus under the guidance of your doctor. When you have a high fever of 39 degrees Celsius or more and it lasts for more than 3 days, you can deal with it in the following two cases. In the first case, if the pregnant woman with a cold is within 2 weeks after ovulation, the medication may not affect the fetus. In the second case, if the pregnant woman with a cold is more than 2 weeks after ovulation, during this period, the central nervous system of the fetus has started to develop. A high fever of 39℃ lasting for one day may affect the fetus, and if it lasts for more than 3 days, it is more likely to affect the fetus; if a high fever of 40℃ lasting for more than 1 day may also affect the fetus. There is not enough clinical information to prove that the fetus will definitely be affected after a persistent high fever in pregnant women (there are data available through animal experiments), therefore, at this time, the doctor may tell the degree of risk of possible damage to the fetus through the analysis of the condition and the medication used, and make recommendations, and finally the pregnant woman and her family will decide whether to terminate the pregnancy. During pregnancy, it is better to go to public places less often; to improve nutrition; to sleep; and to minimize contact with people who have colds to reduce the chance of infection. Doctors have a principle when dealing with whether to use medication for a cold in a pregnant woman: only consider medication during pregnancy if the benefits of the medication to the mother outweigh the risks to the fetus, and if possible, avoid taking any medication during the first trimester of pregnancy.