If women of childbearing age do not have menstruation at the time of menstruation and experience nausea, vomiting and dizziness, most of them are caused by pregnancy, because after pregnancy, the estrogen in the body will have very big changes, due to individual differences, the corresponding clinical symptoms caused by the obvious increase of estrogen are not the same, so some people will show nausea, vomiting and dizziness. It is recommended to take an early pregnancy test to find out if you are pregnant, preferably through ultrasound to find out the location of the gestational sac, and at the same time, to rule out the possibility of hyperemesis gravidarum. If you want to continue the pregnancy, it is best to go to the obstetrics department regularly for the appropriate checkups. If you are not pregnant after examination, you can go to gastroenterology for further treatment to find out the cause of the disease and then actively give treatment.