Dry heaving throughout pregnancy may be normal. 1. Early pregnancy: at this time because of the body HCG rise, easy to induce pregnancy reaction, especially women in the morning or after eating fatty food, it will lead to dry heaving symptoms worsen. As the pregnancy progresses, HCG decreases, and the early pregnancy reaction can be gradually relieved or even disappear. However, there are some pregnant women who will not disappear. 2. Late pregnancy: In mid-pregnancy, especially in late pregnancy, as the uterus continues to grow, it will lead to slow down the peristalsis of the stomach, which will lead to prolonged emptying time, causing gastrointestinal flatulence, especially when lying down or bending over after eating, often dry heaving symptoms will be aggravated. Therefore, dry heaving during pregnancy may be normal. If the symptoms of dry heaving are more serious, it is necessary to go to the regular hospital for examination and treatment as soon as possible.