How long does vomiting last during pregnancy?

After 6-8 weeks of pregnancy, most of them can show dizziness, fatigue, lethargy, increased salivation, loss of appetite, nausea and vomiting, etc. The mechanism of early pregnancy reaction is mainly related to the value of HCG in the body after pregnancy.(Human chorionic gonadotropin) elevated, but the severity of vomiting and HCG values are not proportional, sometimes and emotional impatience, maternal constitution, living conditions, living environment and whether infected with Helicobacter pylori. Vomiting occurs in the morning or fasting, some pregnant women also particularly like to eat acidic and cold food, these reactions are normal phenomena. Most pregnant women vomiting symptoms will disappear on their own after about 12 weeks of pregnancy, and a few pregnant women vomiting symptoms are more serious, lasting until 20 weeks or even throughout pregnancy, but this is relatively rare.