I had a nightmare
Tuve una pesadilla espantosa anoche.
I had a terrifying nightmare last night.
— Gangs of Wasseypur. Parte 1 (2012)
Tuve una pesadilla sobre vampiros.
I had a nightmare about vampires.
It was horrible; I had a nightmare.
— Los hombres detrás del sol 2: El laboratorio del diablo (1992)
Anoche tuve una pesadilla horrible.
Last night I had a horrible nightmare.