My vagina is swollen and itchy, this is the thrid time in five years and no one knows why. i have been cleared from any stds. i need help.?

Vaginal Health: First of all, eliminate all perfumed or deoderant soaps from the vulva and use dove, caress, or ivory which are mild and non-irritating. Eliminate thongs, and use cotton crotched underwear. Get out of wet bathing suits, and exercise togs immediately after use. Finally have a gyn md do a wet prep(or smear) of the vaginal fluids for microscopic immediate assessment of the content for infection.

Be seen: It is possible that it is an infection that is not an std. A subclinical yeast infection, for example, or perhaps something else. It could also be an allergic reaction to something.