Nathalie knew fully well that she wasn't showing,showing but there was definitely a change to her body, she typically had an incredibly flat 'belly'. But since day lets say 43 she's noticed that there was a bit of change to her appearance. Her normally completely flat stomach was replaced with a slight curve, it wasn't very visible but she saw it and so did her obgyn.
One thing that she was incredibly happy about though was her sonogram.
Her sweet little baby was growing quickly, it did scare her but it also made her feel as if she had a purpose.
She'd also seen Marinette's sonogram, the poor girl couldn't stop crying.
They had also gotten a 3d image of their babies and they were quite excited
Their babies looked weird at this stage but it was still a very lovable picture.