Hyperthyroidism in pregnant women does not usually cause vomiting, but only in very severe cases of hyperthyroidism, and it is recommended to prepare for pregnancy under the guidance of a doctor. If a patient with hyperthyroidism vomits during pregnancy, the vomiting is usually a normal reaction to pregnancy and is not related to hyperthyroidism. Clinically, vomiting may be triggered only when hyperthyroidism is particularly severe. However, this is very rare. Therefore, there is no need to worry too much about vomiting during pregnancy, as long as the indicators of hyperthyroidism are detected. Irritability, rapid heartbeat and fatigue during pregnancy may be caused by hyperthyroidism. If symptoms related to hyperthyroidism are present, it is recommended to consult a doctor at the hospital in time to determine if treatment is needed. It is important to pay attention to the changes in the body during pregnancy and monitor and control hyperthyroidism to avoid aggravation during pregnancy. Seek medical attention when symptoms are detected.