There could be a lot of reasons that your vulva, or vaginal lips, are itchy and swollen, but you have no discharge. A few causes could be an.
vaginal itch; thin white, grey, or green vaginal discharge; a foul, fishy vaginal odor . 7 Causes of an Itchy, Swollen Vulva Without Discharge.
A “slight” vaginal itch without a change in your normal vaginal fluid/discharge is usually caused from a reaction to something your vagina has.
Without daytime diversions, the itchiness can seem more intense. white or gray vaginal discharge; itching of the vulva; a strong fishy odor.