unplanned pregnancy

Translations
незапланированная беременность
They were surprised by the news of an unplanned pregnancy.
Они были удивлены новостью о незапланированной беременности.
Definitions
An unplanned pregnancy refers to a pregnancy that occurs when a woman did not intend to become pregnant at that time, often due to contraceptive failure, lack of contraception, or not planning for a child.