There are two main reasons why a woman doesn’t have her period: the first, pregnancy; the second, endocrine disorders. How to distinguish between these two situations? The first, relatively simple, to the market to buy urine pregnancy test paper, test morning urine, you can easily rule out pregnancy caused by menopause, if it is two bars, it is proved to be pregnant, if the display of a red bar, it is proved that there is no pregnancy. The second, if there is no pregnancy, the time to menstruation did not come, this time may be endocrine disorders, need to go to the obstetrics and gynecology clinic for ultrasound, according to the thickness of the lining, need to use some drugs to adjust the menstruation appropriately.