Many times, we suggest that friends who are preparing for pregnancy should undergo a detailed preconception checkup before they prepare for pregnancy, but many of them are confused about what kind of detailed preconception checkup is necessary. In particular, many people are confused as to whether or not a tubal examination is necessary, but is it really necessary for everyone to have a tubal examination? In fact, in the end, tubal examination is not necessary for everyone, but in some cases, it is more reassuring to be examined than not to be examined, especially in the following cases: 1. friends who have a history of pregnancy, including those who have given birth to a baby or had an abortion, and those who have had laparotomy. 2, preparation for pregnancy for more than a year still not pregnant, especially if the couple has done other aspects of the examination, showing that all normal. 3, friends who usually have inflammation of the reproductive organs or occasional lower abdominal cramps and lumbosacral pains. If you belong to the above cases, it is better to have a specific tubal examination to determine the specific conditions of the fallopian tubes before continuing to prepare for pregnancy. So, if you need to do a tubal examination, what should you pay attention to in the specific examination? If you need a tubal imaging test, it is best to do it within 2-7 days after menstruation. First of all, because the bleeding has stopped at this stage, it is not easy to cause infection and other conditions during the imaging examination. In addition, the endometrium is still relatively thin during this period, so if the endometrium is too thick, the imaging may be more obvious and there may even be bleeding. 2. Precautions before the examination It is better to prohibit sex for about a week before the tubal imaging, so as to reduce the possibility of pelvic inflammatory disease to a greater extent, which is less harmful for women. 3.Post-examination precautions The main thing to note after the tubal angiography is to prevent infection. In addition, it is best to prohibit bathing and sexual intercourse within 2 weeks after the operation.