Menstruation delays 9 days not to come, how be to return a responsibility

Menstruation delay 9 days do not come, may be related to pregnancy, endocrine disorders, mental stress, taking hormone drugs and other reasons, kidney deficiency may also lead to menstrual delay. Suffering from tuberculosis, chronic hepatitis, hypothyroidism, severe anemia can also lead to menstrual delay. Menstruation before eating cold food, can also lead to menstrual delay.