Who to tell & when?

Sam • 🇬🇧 UK Full Time Mum, 2YO girl, pregnant with 2nd
I haven't told anyone yet (apart from my husband of course) and I don't feel ready to tell anyone yet. I haven't even got my head around it myself.
My husband thinks we should tell our parents but he's close to his Mom & I'm not really close with mine. I do have close friends who I wouldn't mind telling, and my sister, but she tells my Mom everything & if I told my Mom I'd feel like I had to tell my brothers too & it just feels like it'd snowball 🙈 I'd rather just wait until Xmas if we can.
Is anyone else having this issue?