There are many reasons for belly pain and leucorrhea. If you have belly pain and leucorrhea before your period, it may be a normal sign that your period is coming. However, some gynecological diseases, such as vaginitis and pelvic inflammatory disease, can also cause leucorrhea. It is recommended to go to the hospital for examination of vaginal secretions, gynecological ultrasound and gynecological double examination to clarify whether there is pelvic inflammatory disease or vaginal inflammatory disease, and if there is, further treatment is needed. Normal leucorrhea is a white, thin paste or egg white, sticky, small amount, without fishy odor. If there is inflammation of the reproductive tract, such as vaginitis, acute cervicitis or cancer, the amount of leucorrhea will increase significantly and there will be a change in its nature. It is advisable to pay attention to vulva hygiene, not to have intercourse during menstruation, and to go to the hospital when there is discomfort.