Pregnancy vomiting starts around 6 weeks of pregnancy and continues until about 12 weeks when it slowly disappears. However, the duration and severity of the reaction to pregnancy vomiting varies due to the different physical conditions and hormonal secretion in the body of the pregnant woman. In some cases, it lasts for the first 3 months of pregnancy, but in others, it lasts for a shorter period of time, with nausea and vomiting only for a few weeks after pregnancy, and may disappear around 50-60 days of pregnancy. However, in some cases, there is still a mild reaction to pregnancy vomiting until after the third month of pregnancy. If the fetus is developing well, the duration and severity of the vomiting reaction will not affect the fetus.