Aunt is also known as menstruation, menstruation delayed for a week did not come to pregnancy test not pregnant, may be the test time is too early to cause, may also be other reasons for the delay in menstruation. If the test is too early, the urine HCG is not yet significantly elevated, resulting in a false negative, you can re-measure about ten days after the delayed period or go directly to the hospital to check the blood HCG to confirm the diagnosis. If the possibility of pregnancy is ruled out, it is considered to be menstrual disorders caused by endocrine disorders, including obesity, excessive dieting, irregular living, premature ovarian failure, etc., which can lead to endocrine disorders and trigger delayed menstruation. In addition, if the patient has a history of uterine surgery, postoperative adhesions in the uterine cavity or cervix lead to menstrual blood can not be discharged, menstruation will also be delayed. It is recommended to go to the obstetrics and gynecology department of the local hospital in time for relevant examinations to make a clear diagnosis.