Dilated but thick cervix

J • Mother of 5, Married to my best friend 7/30/15. Ready for everything God has in store for us! 😍😘
Today I found out I was 3cm. Last Wednesday it was just a fingertip... I'm 36 weeks, will be 37 on Sunday. My question is, what happens when they say your cervix is still thick but dilated 3cm? What does that mean? Has anyone else experienced this? Thank you!