It generally will not hurt to get a Pap smear. The doctor does have to use a speculum to open the vaginal canal, which can cause a bit of pressure. Then, a small brush or cotton tipped stick will be...
http://www.youtube.com/watch?v=fvvpVVQGUtchere it shows how its done with no pain at all
I hear a lot of people say, "Oh, a pap smear doesn't hurt... it's just uncomfortable." Well, mine hurt today...