In Coral Island , the baby arrives about 14 in-game days after you agree to have one, according to recent Reddit discussion and player reports.

Reddit scoop

A 2025 Reddit post says it takes 14 in-game days for the child to arrive once you agree, and a 2026 thread repeats that the baby shows up “in about two weeks” in-game.

Related notes

Players also mention that if the prompt is missed or the game is closed at the wrong time, the baby event can feel delayed and may roll again later rather than appearing on a fixed day.

A guide on the game’s baby system also says the pregnancy/baby event triggers after reaching the right relationship and house upgrade requirements, then the birth happens after 14 days.

Bottom line

So the short answer is: about two in-game weeks after accepting the baby prompt.