If the leukorrhea is like water, accompanied by pain and distension in the stomach, the presence of endometrial inflammation, pelvic inflammatory disease, cervical inflammatory disease, or even vaginal inflammatory disease cannot be ruled out. A detailed diagnosis of the cause of the problem should be made through auxiliary examinations. You can go to the hospital for routine tests of the leucorrhea to rule out the presence of trichomonas, mycobacteria, or even bacterial vaginal inflammation. It is also necessary to check the cervix, whether there is a certain amount of bleeding in the cervix, and also to do a gynecological ultrasound to determine whether there are any abnormalities in the morphology of the uterine cavity, and whether there is a large amount of inflammatory exudate in the pelvis, which can cause such a performance.