Well I am 1 cm dilated at 33 weeks according to the doctor but with each dr that checks me the effacement is different, this is VERY subjective and doesnt necessarily mean anything. I was told I was 50% effaced about 3 weeks ago, one week later at my next check I was told I was 20% effaced and yesterday I was told I am not effaced at all but I am 1cm dilated and -3 station... it is all so subjective and the best indicator that things are moving along are those contractions that are getting longer, stronger and closer together! Good luck to all you mommas that are close to holding your bundle of joys!