Early pregnancy reaction usually starts at 5-6 weeks after pregnancy, which tends to produce nausea and vomiting.
Generally speaking, nausea and vomiting after pregnancy is mostly caused by early pregnancy reaction. Early pregnancy reaction usually occurs at 5-6 weeks after pregnancy. As the fertilized egg begins to implant, the hormone levels in the body gradually change, which easily leads to gastrointestinal reactions, causing nausea and vomiting.
The early pregnancy reaction will gradually disappear around the third month of pregnancy; however, there are a few pregnant women who have no early pregnancy reaction at all, and a small number of pregnant women will have nausea and vomiting throughout the entire pregnancy.
You need to pay attention to regular checkups between pregnancies, and if there is any abnormality, it is recommended to consult a doctor in time.