I have a same problem this week....it's the hair that poke inside. Don't worry, it's normal.
Or maybe it could be a yeast infection...go to the pharmacy store and buy a cream for vaginal that prevents the itching...I tried this before, it helped.
Is in in the vagina (like inside your body) or in the vulva? (The outer area, underneath the lips but not where hair grows)
In the vulva could be normal, I guess. But if it actually itches in your vagina, that's a problem, and you need to see a doctor. It's probably not a yeast infection if you aren't getting any other discharge or irritation. Does it hurt to have sex or put your fingers up there?