If the degree of cleanliness is third degree, there is no vulvar itching in the clinic, and there is no localized congestion and edema in the vagina, and it is just a simple degree of cleanliness of third degree, and there is no other pathogenic bacterial infections, you can do the contrast examination. After the contrast examination, oral antibiotics can be taken for 2-3 days, mainly to prevent infection, it is recommended to keep the vulva clean after the contrast operation, change the underwear diligently, if there is vaginal bleeding, it is recommended to change the sanitary napkin diligently, it is better to use cotton sanitary napkin, and the local area is well ventilated, so as to avoid the propagation of pathogenic bacteria. In addition, it is recommended not to get pregnant within 3 months after the imaging, because the imaging is performed under X-ray, the radiation is still relatively high, if pregnancy may cause fetal malformation, so it is recommended to consider pregnancy after 3 months after the imaging.