Vomiting on progesterone can be caused by side effects of the medication or an early pregnancy reaction. Progesterone can be used for the treatment of preeclampsia and luteal insufficiency. After taking the drug, the patient may cause gastrointestinal stimulation, causing vomiting and nausea and other symptoms, which is caused by the adverse reaction of the drug, the patient to stop using the drug in time to alleviate the above symptoms. Progesterone can also cause vomiting, which can be caused by the early pregnancy reaction of the woman during the fertility preservation treatment. Women in early pregnancy by the body of hormone levels, may also appear vomiting symptoms, this is a normal phenomenon, usually do not need to worry about excessive, after a period of time can be disappeared. Progesterone vomiting may also be caused by other reasons, it is recommended that patients go to the hospital in a timely manner.