Pregnant women lying down when the pressure on the stomach and intestines is relatively small, so the reaction of pregnancy vomiting will be relatively light. However, this situation varies from person to person, not everyone lying down pregnancy vomiting reaction will be reduced. During pregnancy, due to elevated human chorionic gonadotropin in the body, gastrointestinal peristalsis slows down, gastric juice secretion decreases, 90% of pregnant women will experience gastric bloating, nausea, vomiting, heartburn, acid reflux and other digestive symptoms. Usually after 4 months will gradually improve, do not worry too much. It is recommended that pregnant women can eat some light food during pregnancy vomiting, and try to avoid greasy and spicy food. Usually keep a happy mood, pay attention to emotional stability, regular work and rest, eat more fresh vegetables and fruits, timely replenishment of water, to avoid dehydration. Try not to go or go less to places with irritating odors, and open the windows diligently to keep the air circulating in the living environment. If the vomiting is particularly severe and you can’t eat anything, consider severe vomiting of pregnancy, which requires medical treatment.