cervix is opening up

Anisa • Im a 29 year old mom to Aviana 👶🏽💛.
I had a dr appt Tuesday and my dr checked my cervix she had said that my cervix is starting to open up, now does that mean the mucus plug came out already? ( made a post few days about that if it was my mucus plug or not)  she didn't say how dilated just that it's opening