To know whether the fallopian tubes are blocked, you need to have a tubalogram. The tubalogram should be done in the gynecology clinic after 3-7 days of clean menstruation, without coitus, and excluding vaginal inflammation. The doctor inserts a special tube into the uterine cavity, injects a contrast solution, and then takes an X-ray. The X-ray will show whether the fallopian tubes are open, whether the tubes are filled with contrast medium, and whether the contrast medium is able to enter the abdominal cavity and disperse smoothly; if it disperses smoothly and there is no blockage, the fallopian tubes are open. If bilateral fallopian tubes are not visualized, it means that bilateral fallopian tubes are completely blocked; if they are partially visualized, it means that they are open but not smooth; if both fallopian tubes are shown clearly but there is no contrast fluid in the peritoneal cavity, it means that the umbilical end of the fallopian tubes is wrapped.