Baby’s femurs measuring behind

My baby’s femur bones are measuring 2 weeks behind. Is this something I should be concerned about? Nothing else is wrong but I’m worried about him because I googled it (big mistake, I know, I need to block myself from using google) and it said something about chromosomal abnormalities and I opted out of the NIPT because I told myself at the time that it doesn’t matter to me which it doesn’t but if he does have anything wrong I wish I had given myself the opportunity to prepare for it in case he needed any special care.

I don’t want to get that in my head but I am just slightly worried now that I’ve seen that.