When do you announce pregnancy?

Jensyn • Baby girl is due October 16th 👧🏼💕

Just FYI - I’m not pregnant yet...first day of AF today. But if I was to get pregnant my next cycle, I would know before Christmas. I’d like to do a cute little announcement in the form of a Christmas present to my mom, but wasn’t sure if it would be premature. (Honestly...this whole question is premature since I’m not pregnant yet 😂but I just want some opinions!)