How long does it usually take for pregnancy nausea to occur?

Usually, pregnancy-related vomiting occurs around 6 to 7 weeks of gestation, but there are individual differences, and the time of early pregnancy symptoms varies among individuals. Details are as follows: Pregnancy-related vomiting, also known as early pregnancy symptoms, mostly occurs in the early stages of pregnancy. Typically, it happens around 6 to 7 weeks of gestation due to the increase in chorionic gonadotropin levels in the body, combined with factors such as reduced gastric acid secretion and prolonged gastric emptying time. The specific timing of pregnancy-related vomiting varies among individuals and is related to personal constitution. A small number of women may not experience vomiting during pregnancy. Early pregnancy symptoms usually manifest as vomiting, nausea, aversion to fatty foods, fatigue, and other symptoms. Typically, around 12 weeks of gestation, early pregnancy symptoms will gradually diminish or even disappear. Pregnancy-related vomiting is a normal pregnancy reaction, and some women may not experience it throughout their entire pregnancy. Therefore, if vomiting does not occur after pregnancy, there is no need for excessive concern; blood tests can be conducted to check chorionic gonadotropin levels and ultrasound examinations can be done. If the embryo is confirmed to be developing normally in the uterine cavity, there is no need for excessive anxiety, and one can focus on prenatal care.