Blended family?

Anyone else with blended families? My hubs has three kids and three babymamas. Two of which we have custody of. We also have custody of my daughter and I'm five weeks pregnant with one of our own together. I love my stepkids like they're my own, they even call me mom. I'm concerned about the exs finding out. Mainly his ex wife whose kid we don't see and my ex because I know they will wage a war of drama on us. Anyone else deal with HEx drama?