stress can increase vaginal itching but i'm not sure if it initiates it also.. some reasons of vaginal itching are low level of estrogen , any small infection in the vagina, inflammation or any reaction with any detergent, cream, soapetc.. don't stress out too much it makes you more susceptible to infections.. u can clean ur vagina witha cotten swab and a bit of luke warm water.. take care.
Maybe. Can also be shafing from your cloths as they rub on your skin.