After stream of people does not come late menstruation how to return a responsibility

After the flow of people delayed menstruation, general flow of people after a month or so time will come menstruation, if the time has not yet arrived, you can observe a few days, if it has been more than 50 days has not come menstruation, consider may be cervical adhesion and other factors caused, need to go to the hospital to do B ultrasound examination.