Maculate (1970)

Maculate is a film about a girl in the '50s, sent to a nunnery by her parents as a last resort for her bad behavior. After being kicked out of countless schools, her parents make it clear it's either the Almighty's house or the streets. Soon after her arrival at the abbey she realizes she's pregnant - not wanting to end up homeless - what's a girl to do but fake an immaculate conception?