You cervix is a good length

FWIW
If anyone is interested here is a chart for Cervical Length Percentiles throughout pregnancy.

Anything less than 2.5cm or 25mm is where the limit for a cervical suture which would need to be placed between 12-23 weeks at the absolute latest.

I am hoping for a long measurement on Wednesday, my first was 2.5cm and second was 2.79cm, so really hoping to be beyond 3cm

HTH's
xxoo