Surprise pregnancy

Has anyone waited to announce for a long time or not at all? I really like the idea of not having everyone know because I just like not having to answer questions or having people think they need to know everything. I’ve already had one daughter who’s also 18 months old. With her I announced right at 12 weeks on my social media. I just feel like I want privacy this time. Anyone else do this? And how was it for them?