Down syndrome testing!

So as I’m 36 nearly 37 it was advised I had this blood test and testing done at anomaly scan... got my results and I’m in the low bracket... I have a 1 in 54,312 chance of my baby having Down’s syndrome.... they measured the baby’s neck which was 1.6mm and not high at all.... it’s a very active baby and would not stop moving at all... I’m having a gender scan on Monday I’m so excited but so scared.... I have a 18, 15 and 12 year old already and will be doing this as a single mum... anyone else with me?