with my daughter i was at 2cm for like 3weeks it depends on your but its normally a slow process
I was 1 cm dilated from about 35 weeks and didn't go any further with my first three pregnancies until I was induced. With my fourth pregnancy I was 1 cm until 40 weeks and didnt dialate any more until 3 days before my water broke. And i was exactly 41 weeks when it broke. I was 4 cm when i got to the hospital.
With my first I was at a 1 from 36 weeks till I was induced!! Then he still didn't want to come out!! Guess he was a mommys Boy from the start!
I started dialating at 7 months with 3 of my kids. I didn't deliver any of them until very close to my due date.
You can be 1 cm for weeks. The childbirth educator at our birth center was 4 cm for 2 weeks before going into labor. But everyone is different. I was also 1 cm at my 36 week apt, and my midwife didnt check me this past apt at 37 weeks.