I was checked twice during labour, once at 6cms and then at 8 cms. I can't say I remember much about how it felt, there was a lot of funny sensations going on anyway. The midwives use their hands It wasn't bad if I remember rightly (maybe because I was already so dilated I was already quite loose up there? I was checked in the weeks before labour with a speculum, and that was fairly uncomfortable as I had a spot of thrush and a student performing it who had to try several times to see the cervix, twist the speculum around, lift bottom etc... ouch!! That one was more like a smear I suppose, I have to remind myself to relax as I automatically want to tense up which isn't the best when having a speculum inserted!