When and how to share the news

Tonight we briefly discussed how we should go about telling everyone since I took the test a few days before my missed period and chemical pregnancies aren't all that uncommon. I think we've decided to wait until a week after my missed period to release the news to everyone just in case. We look forward to accouncing our baby news on the 25th , but of course special considerations will be made for our parents and maybe a few others with some pregnancy experience. I don't want anyone to feel left out, but we feel it's better to be as sure as possible before we say anything