Being exposed before announcing!

Jordan
I am currently 11 weeks along, but my bump is growing really quickly! My husband and I have not gone to our 12 week appointment; however, we have a really big birthday party coming up this weekend! There will be family members there who take pride in prying into your business and making comments on social media. Would you announce your pregnancy before going so no one speculates or wait until 12 week appt? First appointment at 8.5 weeks was normal. 
I may be overreacting but I'm worried someone will announce on Facebook INTENTIONALLY for us 😕