Scared to tell people when we do conceive

My husband and I are TCC baby #1. In the past I've had 2 miscarriages from a couple years ago and honestly when we finally do conceive (I really hope I can again) I'm really scared to tell people. I told my husband when it happens absolutely no one is allowed to know until I'm 12 weeks, but I'm scared that I'll get to 12 weeks and tell people and all the sudden I'll miscarry. I'm so scared of miscarriage now it makes me scared to get pregnant.