What is the reason for delaying menstruation for more than ten days?

Women suddenly show menstruation delayed more than ten days, if there is sexual life, to first determine whether there is a chance of pregnancy. Best to the hospital blood test, because blood test pregnancy is 100 percent reliable, if there is no problem with blood test shows menstrual delay, consider endocrine disorders, such as recent mental stress, irregular schedule, or weight loss eating is not good, will cause ovarian secretion hormone disorder, causing menstrual delay, it is best to do a b ultrasound look, determine the thickness of the endometrium at this stage, if the endometrial thickness is more appropriate, you can consider using progesterone, Generally used for about 5 days, 3 to 7 days after stopping the drug will come menstruation. Occasionally show menstruation delayed more than ten days, as long as the attention to change living habits, slowly will ease. If often show menstruation delayed, you must check the female hormone 6, determine the cause of endocrine disorders.