There's a red dot on the side of the vagina. What's going on?

Female vagina edge has red dot, consider is happening recently unclean sex life, or long-term do not pay attention to pudendal sanitation, cause pudendal bacterium to be more, cause bacterial infection to be caused, next, if do not pay attention to clean pudendal secretion at ordinary times, easy to form stimulation to vulva skin, also can cause this phenomenon.