Imagine finding out such a bombshell after 19 years...
A teenager in Spain is demanding three million euros in compensation after learning she was swapped at birth with another child.
The 19-year-old grew up with a family that wasn't hers after a mix up at a maternity hospital in the La Rioja region in 2002.
Spanish medics have blamed it on "human error" after she and another baby were placed in incubators, both underweight.
The babies were then accidentally swapped.
The parents of the other woman involved have reportedly also been made aware of the situation.
She's now taking action against local authorities.