If the belly pain and yellowish leucorrhea may be caused by the following reasons: first, caused by inflammation of the pelvic cavity, when there is inflammation of the pelvic cavity, the tissue will become congested and edematous, so there will be pain in the belly and the exudation will increase, so it will lead to the phenomenon of yellowish leucorrhea. When there is a fibroid, it will also show pain in the stomach and yellowish leucorrhea, which can be diagnosed by ultrasound examination. Therefore, it is recommended to go to the hospital for examination and treatment as soon as possible once gynecological discomfort occurs.