Any third time mommas here?

Tiffany • Married • Three children; two angel babies; #4 on the way • Photographer ❤️
This is my third pregnancy. Currently 33 weeks. At my appointment last week my provider checked me as I stated I was feeling a lot of pressure down below that was painful and having increased mucus discharge. She said I was 2cm but not effaced. She said it wasn't concerning since this is my third pregnancy. But my question is, aren't you supposed to efface before you dilate? With my other two I know I most certainly did! This time I'm already open without thinning out.