To check if the fallopian tubes are open, this test is called tubalography and it is usually done within 3-7 days of a woman’s menstruation, when she is not having sex and does not have vaginal inflammation. If the patient has vaginal inflammation or has had sexual intercourse, it is not suitable for tubal imaging because the intrauterine operation requires a tube to be placed in the uterine cavity through the vagina and cervix, and if there is vaginal inflammation, it can retrograde to the pelvis and form pelvic inflammatory disease. If you have had sexual intercourse during this period and cannot exclude pregnancy, you are also not suitable for tubal angiography.