A bar without a period for 39 days usually refers to a bar detected by the early pregnancy test, which most likely indicates that a woman is not pregnant, but it cannot be ruled out that the early pregnancy test does not detect pregnancy due to insufficient HCG concentration in the urine in early pregnancy, operational errors, etc. The normal menstrual cycle of women is 21-35 days, if a woman is not pregnant, then the absence of menstruation for 39 days represents a delay in menstruation, which is common in women with endocrine disorders and other conditions. Whether it is endocrine or pregnancy, it is recommended to consult a doctor for examination and symptomatic treatment. Common causes and treatment 1, endocrine disorders: life, work pressure, or stay up late, irregular diet, excessive weight loss, etc. may cause female endocrine disorders, may appear menstrual cycle disorders, delayed menstruation and other symptoms, should check the sex hormone six clear diagnosis, and follow medical advice to take progesterone, estradiol valerate and other progestin, estrogen drugs to regulate. If there is endocrine disorder caused by polycystic ovary syndrome, hyperthyroidism and other diseases, menstrual disorders, often accompanied by other symptoms, such as hirsutism, acne, rapid heartbeat, etc., can follow medical advice for targeted treatment; 2. Early pregnancy: If you do not have a period for 39 days and have uncontraceptive sex, it is possible that pregnancy causes delayed periods, because the HCG concentration in urine has not yet reached the detection level when using early pregnancy test paper, or The HCG concentration in the urine has not yet reached the detection level when using the early pregnancy test, or the operation error has caused the early pregnancy test to show a bar. It is recommended to test again in a few days, or go to the hospital for blood HCG test and ultrasound to confirm the diagnosis. If there is intrauterine pregnancy and there is a plan to have children, you should actively treat the pregnancy with birth control. The daily attention should be paid to keep a relaxed mood, avoid excessive tension, depression, loss and anxiety, to avoid the emotional impact on the hormone secretion in the body, and to ensure sufficient sleep and not to stay up late.