Itchy, red, swollen vag

my vag has been somewhat itchy but I refrain from scratching because I don't want to make it worse. When I look at it in a mirror, it's kinda swollen and red. I'm not having any weird smelly discharge with it. I've been treating it by patting witch hazel on it and some vitamin E oil and not wearing underwear which seems to be helping somewhat. Does anyone know what this might be? Thanks!