When would you announce your rainbow?

I had a third trimester stillbirth last year. I announced that pregnancy at 14 weeks and lost her at 30 weeks. I’m currently almost 6 weeks pregnant and I’m terrified to announce it to anyone who knows me in real life. My fiancée and I are both kind of numb right now and detached from this pregnancy. We just don’t truly believe we’re going to bring a baby home.

When would you announce? I don’t know what to do.