The leucorrhea will increase significantly before the menstrual period, appearing thin milky white leucorrhea, the body hormones increase before the menstrual period, the blood vessels in the uterus is full of blood, is normal, no need to carry out treatment. The leucorrhea appears to be pasty or sticky, consider that the underwear worn is not breathable leading to local dampness, which may be caused by lack of hygiene. The leucorrhea appears foamy or bean curd-like, yellowish in color, accompanied by vulvar and vaginal itching and pain, which is abnormal, consider vaginitis, which may be caused by bacteria, fungi or trichomonas, you can go to the hospital for routine leucorrhea examination. According to the test result, the type of vaginitis can be determined and appropriate medication can be chosen. You can wash the vagina with jelqing or diluted potassium permanganate, mycosis can be treated with clotrimazole or mycobacterial suppositories, bacterial vaginosis and trichomoniasis can be treated with metronidazole suppositories vaginally.