Usually there will be some early pregnancy symptoms, if there are no symptoms in early pregnancy at this time there may be a case of embryonic deactivation, but it can not be ruled out as a normal situation. At this time, it is recommended to go to the hospital for differential diagnosis, so as not to lead to adverse consequences. Most pregnant women will have varying degrees of early pregnancy reaction, some people react strongly, some people will not have any symptoms, mainly related to personal constitution. Early pregnancy reaction occurs after 6 weeks of pregnancy, mainly related to the HCG level in the body, pregnant women will appear nausea, vomiting, appetite changes, fatigue, dizziness and so on, but some people can also appear asymptomatic, at this time, if the examination of blood HCG and progesterone is elevated, ultrasound shows that the development of the embryo is normal, there is no other discomfort, no need to worry about too much. If there are no symptoms in early pregnancy, the blood HCG doubling data is poor, and progesterone is not elevated, ultrasound shows that the embryo is not developing normally. In this case, further diagnosis and treatment are recommended, and fertility preservation treatment is given, and the pregnancy may be terminated in serious cases.