I found this about enfacement and dilation, hope it helps some.

As the baby's head drops down into the pelvis, it pushes against the cervix and causes the cervix to relax and thin out, or efface. Effacement is described as a percentage. For example, if your cervix is not effaced at all, it is 0% effaced. If the cervix has completely thinned, it is 100% effaced. After the cervix begins to efface, it will also begin to open (dilatation). Cervical dilatation is expressed in centimeters from 0 to 10. Zero means that the cervix is closed, and 10 means that it is completely dilated

so, basically they are kind of happening at the same time but the thinning starts first? that's what i'm thinking. i've been reading about it too. lol. insomnia strikes again!

Yea, I think that's how it works. Don't quote me on it though, I just read stuff. lol. I'm wide awake but I've been sleeping all day! These headaches are driving me up the wall!

do you usually get headaches? cuz if your blood pressure is high and you're having headaches you should check with the doctor about that. i don't know too much about it because my blood pressure has been fine throughout.

i'm 3 days away form my due date and just thinking too much i guess. i'm a little impatient at this stage so i'm overanalysing every twinge i get.

my doctor told me on tuesday that i'm 1cm dilated but said nothing about effacement, so i was just wondering about all that. trying to predict the unpredictable i guess.

Well I tell my doctor about my headaches every time I go in there, and all she does is marks it on my chart. Last time I told her, she looked concerned, but didn't mention anything about it.

Wow, so close to your due date. Hopefully you'll go into labor soon. i know my cousin was 1 cm dilated up until she was induced 3 days before her due date, so who knows. At least you'll have your baby in your arms before you know it.