What Causes Vomiting During Early Pregnancy

low blood pressure (hypotension) when standing. Unlike regular pregnancy sickness, HG may not get better by 16 to 20 weeks. It may not clear up completely until the baby is born, although some symptoms may improve at around 20 weeks. See your GP or midwife if. Nausea and vomiting of pregnancy is caused by the release of hormones from the cells of the early chorionic villi, that is the early placenta.

The hormones in which we are particularly interested are human chorionic gonadotrophin (hCG), progesterone and locally acting eicosanoid hormone, prostaglandin E 2 (PGE 2). Vomiting