Bacterial vaginitis does not cause vaginal bleeding, but in women with more severe cases, it can cause vaginal bleeding after intercourse and trigger blood in the woman’s leukorrhea. If vaginal bleeding occurs frequently with bacterial vaginitis, it may be caused by a combination of other diseases, such as cervical polyps and endometritis. It is also sometimes caused by the placement of a birth control ring. It is recommended that women go to a regular hospital for examination to find the cause and treatment. Bacterial vaginitis is a common gynecological disease in women and can be treated with metronidazole effervescent tablets with good results.