It is essential to pay attention to the symptoms of early pregnancy reactions, which can occur in the early stages of pregnancy. When you are just pregnant, pregnant women can experience the following feelings: nausea and vomiting. Due to the increase of progesterone in a short period of time after pregnancy, some patients are more sensitive to the elevated progesterone and thus show early pregnancy reactions such as nausea and vomiting. The severity of nausea and vomiting varies from person to person, with some patients having mild or even no obvious nausea and vomiting early pregnancy reactions. Some patients may experience severe nausea and vomiting, which may prevent them from eating and drinking. Secondly, some patients may experience mood changes, which may be characterized by depression and emotional instability. In addition, some pregnant women may experience mild upper respiratory tract infection, aversion to greasy food, etc. All of the above-mentioned early pregnancy reactions are mild and can be gradually reduced until they disappear as the pregnancy progresses. However, if these symptoms are severe and last for a long time, it is recommended that the pregnant woman should consult a local hospital in time to exclude other organic pathologies. Therefore, it is a normal physiological phenomenon for pregnant women to have some symptoms of early pregnancy reaction in early pregnancy.