There is not much effect if you are pregnant during the flu. This is because the resistance is poorer and weaker during pregnancy. If there is already a cold, it is important to have active treatment so that it will not cause a respiratory infection, which may affect the health of the fetus. The first thing to do is to go to the hospital and register with the obstetrics department for a blood test to determine whether it is an increase in white blood cells or a viral infection, and depending on the situation, symptomatic medication can be administered. You can also drink more boiled water to speed up the metabolism of the medication to avoid any effect on the fetus. If there is a cough during pregnancy, it is important to actively use medication so that it will not cause a small amount of bleeding. If there is any discomfort, such as abnormal bleeding or abdominal pain, a blood test for progesterone, including blood HCG, should be taken at the hospital in time, so that preventive fetal preservation can be performed first.