Hi Tegan,

I think it is called a speculum (?) that they use. It looks like a ducks bill sort of which opens up inside of you. Its not supposed to be painful but you may feel discomfort especially if you are still healing from childbirth.
(I was naughty and never went to my 6 week check up! 8-[ I was just so sick of ppl looking between my legs that I never wanted to spread em again for ages, lmao!)
No seriously though, once you have been through labour a pap smear should be a breeze (in most cases), and it should all be over and done with in around a minute.