A lot of sisters will have this confusion in mind: what should I check if I have not been pregnant without contraception? If there is no special medical history of both husband and wife, the simplest routine examination process is as follows: 1, self-examination of life has no bad habits affecting fertility, such as: sex life and frequency, quality, tobacco and alcohol addiction, living and working environment, there is no contact with paint, chemicals and so on. If there are any, please correct them first. 2, the male partner in the interval of 3 ~ 7 days without coitus time to check the semen. If there are conditions, hospitals should do routine semen analysis and sperm morphology analysis. 3.Ovulation monitoring for the female partner. Commonly used methods are basal body temperature monitoring (no time for office workers can first use this method), urine ovulation test paper monitoring, ultrasound monitoring. Each of the three methods has its own advantages and disadvantages. Our center is used to ultrasound monitoring with urine ovulation test paper, which is the most comprehensive and objective. 4.If both parties have no abnormality in the above two examinations, we have to perform a tubal imaging examination. Here to give sisters a reminder, as long as there are conditions to do imaging, must not do fluids. For people with special medical history, the sequence of tests and the choice of items will be very varied, and can not be briefly described here. After completing the above initial screening, most people’s infertility causes have been clarified, you can treat the cause.