It is usually not possible to check 2 days after menstruation. Normally, it is possible to check 3 days after menstruation. The hormone level in the body is still low during this period, which has less influence on the results and can reflect the normal changes in the female body. If it is 2 days after menstruation, due to the short period of time, there may be no bleeding from the vulva during this period, but there is still a small amount of residual dark blood at the cervical opening, which may cause some errors in the judgment of the results when doing gynecological examinations, such as routine white belt tests or cervical brushings. Three days after menstruation, there is no residual menstrual blood in the cervix, which will not affect the results of the examination. In addition, women should not have vaginal discharge or sexual intercourse 3 days before the gynecological examination, which will also have a certain negative impact on the collection of specimens.