Vaginitis has sex with blood considered to be the process of sexual intercourse inflammation aggravated, stimulation of the vaginal mucosa produced symptoms, you can first consult a doctor for examination, to understand the type of vaginitis and then come to the symptomatic treatment. If the bacterial vaginosis, you can use metronidazole, tinidazole and other drugs under the guidance of the doctor. If the emergence of the vulvovaginal pseudomycosis can be under the guidance of the doctor to use clotrimazole, ketoconazole and other drugs to treat, can inhibit mold infection. If you have trichomonas vaginitis, you can use metronidazole, ornidazole and other drugs as prescribed by the doctor. Usually need to pay attention to personal hygiene, it is best not to have unclean sex, but also need to regularly consult a gynecological routine examination.