So confused

I got told yesterday by a doctor that my blood work wasn’t good for my NT scan (scan itself was all normal) but apparently the ratio between two hormones (papp-a and fbhcg) pointed to an issue, so doctor was a little concerned and said baby might be born small

I spoke to a gynaecologist (from the same hospital) today and she looked at my blood work and said separately they’re both within the normal range, just one is high end normal and one is low end normal so when the ratio is calculated it looks abnormal, she wasn’t concerned in the slightest

It made me feel a lot better but I’m just confused on why I keep getting different information and most aren’t explaining things correctly and causing unnecessary stress