Keeping a secret

So I’m 4w 5d pregnant on my dates. This is our second pregnancy this year...our first one sadly ended with a miscarriage.

NOBODY knows I’m pregnant. I have my first scan booked at 6w5d and the following day is my husbands birthday. That’s when I plan to tell him. Praying/hoping/begging that the scan goes ok so that I can give him the best birthday present ever!

Has anyone else kept a secret this long?

Did anyone else tell their husband/partner with a baby scan?

How did you reveal?