Carolyn Savage and her husband Sean wanted nothing more than a third child. After two pregnancies, Carolyn’s ability to conceive began to dwindle.
Their third baby was conceived after a decade of trying through IVF. When they wanted their fourth, they decided to use an embryo from their previous IVF treatment. Carolyn was ecstatic to learn she was pregnant with a fourth baby.
But then, doctors gave her devastating news: They had accidentally implanted another couple’s embryo inside of her. She was pregnant, but with someone else’s child. Carolyn and Sean were devastated, but knowing the pain of not being able to conceive, they did something completely selfless: they carried the other couple’s child to term. Source