Is anyone getting a cervical length scan for peace of mind? I am low risk but i have anxiety surrounding this so i would like a scan to calm my nerves. When is the best time to get the scan in my case? I am going to ask at my 20 week scan if they can have a glance using the trans abdominal ultrasound but i know that isnt the most accurate way to measure. So should i book one at 18 weeks or maybe 22 weeks? Thank you.