If you are 42 years old and do not have menstrual periods, consider the following reasons: 1. Consider whether there is a pathological disease, a somatic disease that causes menstrual irregularities, such as the presence of endometrial lesions or lesions of the ovaries themselves, pituitary lesions and hypothalamus, which can lead to amenorrhea. After determining the cause of amenorrhea, targeted treatment should be performed. 2. If you are still pregnant at the age of 42, you should also determine if the absence of menstruation is due to pregnancy, a very simple test is a urine pregnancy test. If it is determined that the lack of menstruation is due to pregnancy, it will depend on whether there is a requirement to continue the pregnancy. 3. If you do not have menstruation at the age of 42, you should also consider whether there is a problem of inadequate ovarian function, which can affect the menstrual cycle if there is poor ovarian function at the age of 42. A reproductive six tests and ultrasound are needed to determine if there is a problem with ovarian function and then choose the appropriate treatment plan.