Itchy vag

My vagina (outside) has been soooooo itchy lately ever since I started doing stuff with my bf (no intercourse but oral). It’s itchy like right around the whole of my vagina and all the way from there up to my clit and my labia. My bf doesn’t have any stds or stis or anything like that (he was just tested recently and is a virgin). I just got so itchy that my vagina is now dry and sore because of how much I was rubbing it trying to soothe the itch. I put cold water on it just now with a towel and that seemed to ease the soreness. Does anyone know what this could be? (Also my discharge is completely normal so I doubt it would be a yeast infection)