If you want to vomit after egg retrieval, the most common clinical cause is ovarian hyperstimulation, in the process of ovulation because there are multiple follicle growth and development, so it will lead to estrogen increase in the body, which will easily lead to sodium retention, so there will be a series of corresponding symptoms, such as nausea, vomiting. In mild cases, it is recommended to give bed rest, and to regulate the diet, eat some high-protein food, you can drink winter melon soup, which has the effect of diuretic, try not to eat greasy food. If the symptoms of vomiting do not disappear after rest, it is recommended to go to the hospital as soon as possible, because more serious ovarian hyperstimulation can often cause serious consequences, and can only be normalized after clinical treatment.