Early pregnancy reaction can occur when pregnant women are about two months pregnant, the more common early pregnancy reaction mainly includes: some pregnant women will have nausea, vomiting and other gastrointestinal symptoms when they get up in the morning, nausea and vomiting worsened when they smell the fumes or odors; some patients will have dizziness, fatigue, drowsiness and other manifestations. Most pregnant women have early pregnancy reactions, which can be significantly relieved or disappear in the third trimester of pregnancy. In the early stage of pregnancy, the body’s hormone secretion increases significantly, which will cause frequent urination and breast swelling and pain and other symptoms. These reactions are normal physiological phenomena and most patients do not need treatment.