In early pregnancy, that is, in the early stages of pregnancy, the following reasons are common: 1, cardiovascular diseases: if there is a previous history of cardiovascular diseases, such as hypertension, coronary artery disease and atherosclerosis, and a series of symptoms such as panic, chest tightness and shortness of breath appear again after pregnancy, you need to consult a doctor in time for standardized diagnosis and treatment, especially for electrocardiogram, cardiac ultrasound or In particular, electrocardiogram, cardiac ultrasound or troponin level test of the heart muscle is needed to be alert to the increase of certain burden of the heart after pregnancy, which may lead to cardiovascular diseases; 2. Early pregnancy reaction: if there is no history of cardiovascular diseases or risk factors, including normal blood pressure, blood sugar and blood lipids in the past, and no family history of cardiovascular diseases, if there is heart discomfort, panic, chest tightness and other manifestations in early pregnancy, there is usually no need to be overly nervous, which may be caused by It may be caused by the early pregnancy reaction in the early stage of pregnancy, which is related to the mental, psychological, emotional, exercise, diet and other states of the pregnant woman. Generally, it is necessary to take a good rest and relieve emotions, and there is no need to go to the hospital for an in-depth examination, and rest and recuperation are the main reasons.