What is the reason why girls don't come?

If there is a history of sexual life of women showing menstrual delay, first of all to rule out pregnancy can be used urine early pregnancy test paper or to the hospital blood HCG to determine whether pregnant. If the recent abortion after showing menstruation does not come, to check whether there are uterine adhesions or cervical adhesions possible. In addition, if menstruation does not come, but also check six sex hormones, there may be endocrine disorders caused by, such as mental stress, work pressure is too large, excessive diet and environmental changes will lead to menstrual delay.