To announce today or not

So according to the app I'm 5 weeks 3days today. This is my 2nd pregnancy but will be my first child. I'm not sure whether or not I should announce today. On one hand all of my extended family will be together and it would be very convenient; however, it's still really early. I just don't know if I can spend the whole afternoon with them and not spill the beans, especially when they notice I'm not drinking. What do you all think? Any other momma's telling early?