calling all cervix proffesionals :)

Mary • 37 yrs old and just gave birth to my rainbow baby 2/22/17 after having had 6 losses and I'm expecting again on 2/9/18
Af is due today and hasnt showed her ugly self thank god. ive had some new symptoms over the past week indicating pregnancy and decided to play extra close attention to my cervix. a few days ago it was medium soft and closed. then it was medium firm and closed and today its half firm and half soft(open i think) wth does that mean?! im so confused. does anyone know what that means? how should it look before af and how should it look in early pregnancy?