Itching of the vulva when pregnant should also be caused by inflammation and can be treated with lotion sitz baths and vaginal medication. After pregnancy, the glycogen content of the vaginal mucosa increases and the estrogen level rises, thus making it more likely to cause increased vaginal discharge and sometimes vaginitis. The common vaginitis after pregnancy are mycosis fungoides, trichomoniasis and bacterial vaginosis, which mainly cause symptoms such as excessive leucorrhea, itching and bad odor. If it is mycosis vaginalis, you can take a sitz bath with sodium bicarbonate solution and put mycophenolate or clotrimazole vaginally. If it is bacterial vaginosis and trichomoniasis, you can take a sitz bath with potassium permanganate solution and vaginal metronidazole. These do not affect the development of the fetus, but rather severe vaginitis can lead to premature rupture of the membranes and even infection of the uterine cavity.