Great aunt refers to menstruation. The menstrual period is delayed for 6 days and the test is a bar. Consider that it may be a normal phenomenon, or it may be related to late fertilization, endocrine disorders and so on. 1. Normal menstruation: the average woman’s menstrual cycle is about 28 days, and it is normal for menstruation to be advanced or delayed within 7 days, so it is normal for menstruation to be delayed for 6 days without coming. 2. Late fertilization: If a woman’s menstrual cycle is relatively long, it may lead to delayed ovulation, which in turn leads to late fertilization, the body’s chorionic gonadotropin level is still relatively low, the urine pregnancy test paper can not be detected and manifested as a bar, at this time, you can go to the hospital to test blood HCG to determine whether or not the pregnancy. 3. Endocrine disorders: If a woman is under stress or has polycystic ovary syndrome and other gynecological endocrine diseases, the lack of progesterone in the body due to irregular ovulation will result in the endothelium not being able to peel off the endothelium and delayed menstruation and other clinical manifestations. For women who have delayed menstruation for 6 days, it is recommended that they go to the gynecology department of a regular hospital, complete the blood HCG, ultrasound and other relevant examinations to clarify the cause of the disease, and then under the guidance of the doctor to actively treat the disease.