Is it normal for a month to go by without a period?

Suddenly a month did not come menstruation, this situation, need to combine medical history to judge, first of all to consider whether there is pregnancy, if there is sex life, then first of all to consider, is not caused by pregnancy, did not come to menstruation, this need to go to the hospital, determine human chorionic gonadotropin, that is hcg, generally after his examination, you can accurately judge, did not come menstruation is not caused by pregnancy, if there is no sex life, To consider may be caused by ovarian dysfunction, specific needs to go to the hospital, do six female hormones, or amh, and gynecological color ultrasound, to make accurate judgments, so suddenly a month did not come to menstruation, is not normal, is the need for further examination to be clear, what is the reason for not coming to aunt?