The phenomenon of nausea, regurgitation and vomiting before menstruation is a kind of premenstrual syndrome, which is mostly caused by hormonal fluctuations, but also due to psychological factors, so you must relax, pay attention to exercise, and usually do not work hard, stay up late. If you take medication, you can eat vitamin B6 or gastric reassurance, these drugs are symptomatic treatment, after eating the nausea symptoms will generally disappear. This phenomenon is generally after the menstruation, will gradually reduce or disappear, and do not be too nervous, if not very serious, it is best not to use medication, relax, go to outdoor activities, distracted will disappear.