If it were me, I'd wait awhile. When the fruit is ripe it will fall from the tree.
If you make an "announcement" you're inviting reactions, good bad and indifferent. If you just live your life, and go about the business of creating a stable, happy life for yourself and your loved ones, many people in your family probably won't notice. Hopefully the ones who do notice will also notice that you are all happy, healthy and well adjusted, and therefore know there is no crisis to be alarmed about.