It is normal not to vomit during pregnancy. About 50% of pregnant women experience nausea and vomiting in early pregnancy, 25% have nausea only without vomiting, and 25% are asymptomatic.
Nausea and vomiting during pregnancy are associated with increased chorionic gonadotropin levels, transient hyperthyroidism, excessive stress, anxiety, and vitamin B1 deficiency.
Symptoms of nausea and vomiting most often begin at 6 weeks of pregnancy and are most severe at 9 weeks of pregnancy. 60% of pregnant women’s symptoms resolve on their own after 12 weeks of pregnancy, 91% of pregnant women’s symptoms resolve after 20 weeks of pregnancy, and about 10% of pregnant women have persistent nausea and vomiting throughout their pregnancy.
Everyone is not exactly the same, and it is generally normal for pregnant women to be free of nausea and vomiting during pregnancy. Regular checkups are recommended. If there is any discomfort or abnormality, it is advisable to consult a hospital promptly to avoid delay in treatment.