If you have intercourse during menstruation will lead to the following consequences: first, when the menstrual period, although it is a normal physiological phenomenon, but if you have intercourse during the menstrual period, it will cause more psychological pressure on women, and over time it is likely to cause sexual apathy. Secondly, because the uterine opening is open during menstruation, it is very easy to cause pathogenic infection, resulting in cervicitis or endometritis, which can lead to pelvic inflammatory disease, and may also lead to obstruction of the fallopian tubes due to inflammation, which can cause infertility in the clinic. Therefore, it is not possible to have sex during menstruation. It is advisable to have sex three days after the menstruation is clean and it is recommended to keep the vulva clean to avoid pathogenic infections during the menstruation period.