EGG.

Suggestions:

Mask of the Red Death The Fall of the House of Usher Master of Horror The Tell-Tale Heart P.O.E. Pieces of Eldritch (P.O.E. 3)

A woman sees an egg every time she closes her eyes. One day she sees the egg start to crack and a creature hatch. She struggles to come to terms with her conditions and tries to defeat the creature.