Calling all high school coaches/ teachers! I need help

AJS012 • #1👶💗 #2 👶💗 #3 on the way

I'm a high school coach for a really close group of kids. Like this team defines the word team lol. We spend hours upon hour upon hours a week together for rehearsals. I wear somewhat tight fitting clothing in order to te the ch thier choreography appropriately and all that jazz. So problem is My husband and I recently found out we are pregnant, waited, and now it's almost time to start telling people outside of family. When the right time comes how do I go about telling my kids... if I dont tell them they are going to eventually start rumors between themselves because its soon going to be very obvious..and of course eventually I'm going to be out of rehersal to give birth.... any ideas?