u/missmcbling

Hello! I was watching this anime (A Yakuza’s Guide to Babysitting) and one of the characters showed her partner this card to announce her pregnancy. From what I can tell it says her name, Sanae. I thought it might be a baby book but it seems to just be a card. Is this a thing in Japan? Is there a name for it? Did her doctor give it to her or did she get it from somewhere else? I tried googling but I couldn’t find much.

Thank you!