The tubal imaging test is mostly performed 3 to 7 days after menstruation and no intercourse is allowed. A tubal imaging test is not a routine preconception test. However, many women are now having this test as part of their preconception checkup to clarify the condition of their fallopian tubes. A tubal imaging is a procedure that involves pushing contrast into the uterine cavity to see if the fallopian tubes are open through the conspicuousness of the contrast. As the contrast agent is injected into the uterine cavity, the pressure inside the uterus will increase. If the patient is in the endometrial secretion period, the endometrium is thicker, and when the contrast agent is injected, the increased local pressure can exfoliate the endometrium and cause it to break into small pieces, which can be planted in other parts along the uterine cavity and fallopian tubes, therefore it is safer to choose 3-7 days after menstruation when the endometrium is the thinnest. Before the tubal imaging, other tests include routine blood work, hepatitis B, C, syphilis, HIV, white belt test, body temperature control at normal temperature and no acute reproductive tract inflammation. This is the only way to perform a tubal imaging test. Therefore, it is important to choose 3 to 7 days after menstruation. After the examination, there is discomfort in the abdomen and the symptoms will improve after half a day of bed rest.