Um Homem em Estado... Interessante

When Marcello Mastroianni is feeling run down, Catherine Deneuve is worried that he is going to die and leave her and their eight-year-old son, so she hectors him into seeing her doctor. It turns out he's pregnant.

Jacques Demy's dry satire has an increasingly big-bellied Mastroianni walking around with a befuddled expression, while the world spins slightly out of control around him. Everyone in picture takes the events very calmly and seriously, and everyone is mildly congratulatory towards the expectant father. The few jokes are mild and of the biter-bit variety and, except for the sequence when he gets involved in a campaign of clothing for pregnant men, there isn't much to this trifle.

Given the date of its release and the birth of his son, Mathieu, I suspect Demy started writing it when Agnes Varda offered some irritated comments on her pregnancy.