So i've booked a gender scan, main reason being this will be our last baby and want to give my girls the opportunity to see the baby on a scan, as they can't attend the NHS ones, so it's booked for 17 weeks 5 days - will it be fairly accurate at this point? I will get them to reconfirm at 20 week scan. I'm really not fussed what it is, will be happy with another girl or if it's a boy that will be good too - just want a healthy baby