42 days without menstruation to may be pregnancy, endocrine disorders, polycystic ovary syndrome and other causes, pregnancy does not need to use drugs, other diseases caused by symptomatic use of drugs, such as progesterone, ethinyl estradiol cyproterone tablets and other drugs. 1. pregnancy: usually have sex with women, menstruation 42 days do not come to first consider whether the pregnancy, after pregnancy, the body’s hormone levels increase, the endometrium will not occur cyclical stripping, menstruation will be suspended not to, do not need special treatment. 2. Endocrine disorders: recent mental stress, excessive dieting and other reasons may cause the body’s endocrine disorders, resulting in menstruation 42 days do not come. It is recommended to consult the doctor in time and take progesterone, estradiol valerate tablets and motherwort granules under the doctor’s guidance to regulate. 3. Polycystic ovary syndrome: women with polycystic ovary syndrome, due to increased androgens, luteinizing hormone and follicle-stimulating hormone abnormality, indirectly leading to ovarian ovulation, menstruation will also be suspended not to come, under the guidance of the doctor to take ethinyl estradiol cyclopropylpropanedione tablets, drospirenone ethinyl estradiol tablets, and other drugs treatment. Women’s menstrual periods do not come for a variety of reasons, it is recommended to go to the hospital for examination and symptomatic treatment, the above medication is used as prescribed by the doctor.