Hi , I have gone thru NT scanning and it is the first time since I conceived I am going for scanning. Doc told while scanning that baby has grown it is 13 weeks 4 days but according to lmp it is 12 weeks. But I still doubt on my memory. And first time she could not find nasal bone so she told me to drink something hot and come again so I went again and doc found that nasal bone was 1.9mm. what are other criterias to know if the baby is healthy. Please let me know.