Menstrual headaches and vomiting may be caused by changes in hormone levels in the body, poor rest and other reasons. 1. Changes in hormone levels in the body: estrogen has the effect of dilating blood vessels, women in menstruation estrogen levels will drop, which will cause intracranial vasoconstriction, leading to menstrual headaches, vomiting phenomenon. 2. Poor rest: During menstruation, there will be abnormal symptoms, such as abdominal pain, etc., in which case it will affect the sleep and rest of women during menstruation, thus causing headache and vomiting symptoms. Generally wait until the end of menstruation or a few days after menstruation, the symptoms of menstrual headache, vomiting will be relieved. If the symptoms are too severe, it is recommended to seek medical advice as soon as possible.