I love the idea that the sparkling develop in their carrier’s spark chamber so my vision of Megatron pregnant gonna be like this ^^
His chassis must be a bit bigger than usual. He must pretend that nothing happen and act normally when he walk around the lost light but when someone not notice (which really impossible) he’ll rub his chassis gently and whisper something sweet to the sparkling. It’s gonna make the crew smile and pretend that they didn’t see or hear a thing.
And Tailgate (or Rodimus) gonna be the first to mocking Megatron about this.