The majority of topical contraceptives are administered intravaginally, which can cause an increase in leukorrhea and a change in color, leading to cross-infection and vaginitis. Some women may also have allergic reactions to topical contraceptives, which may cause redness and swelling of the vulva and even intermittent bleeding. Some women may also experience a burning sensation in the vulva and vaginal discomfort after using topical contraceptives. It is best to wash the vulva with lotion if possible to relieve these negative reactions. However, in the future, it is better to use condoms as much as possible to avoid damage to the mucous membranes due to these topical contraceptives.