anomaly scan 20 week or 22 weeks?

[heron22]

Hi I have a NHS anomaly scan booked and the midwife said that the scan is done between 18 and 20 weeks. however, i have looked at getting it done privately and the 2 clinics i have looked at, get them done between 20-24 weeks.

Mine is booked so that i will be about 20 weeks.

So, which one is the right one? should i wait till later than 20 weeks so that they can see more? i am so confused

Thank you

20 weeks is fine. I was told 18-22 weeks, but have since heard 20 weeks is better.

thanks belgo