“They might have been all up in your pregnancy!”

Rome, 5 December
Without Dogma (1891)
Context: I might have been your happiness, and became your misfortune. I am the cause of your death, for if I had been a different man, if I had not been wanting in all principles, all foundations of life, there would not have come upon you the shocks that killed you.

Bret Harte wrote a famous parody of this famous poem, "Mrs. Judge Jenkins" in which the Judge marries Maud, and which he ends with the lines:
Maud soon thought the Judge a bore,
With all his learning and all his lore;
And the Judge would have bartered Maud's fair face
For more refinement and social grace.
If, of all words of tongue and pen,
The saddest are, "It might have been,"
More sad are these we daily see:
"It is, but hadn't ought to be".
Maud Muller (1856)
Context: Alas for maiden, alas for Judge,
For rich repiner and household drudge!
God pity them both! and pity us all,
Who vainly the dreams of youth recall;
For of all sad words of tongue or pen,
The saddest are these: "It might have been!"

Source: Is Everyone Hanging Out Without Me?

Source: Century Rain (2004), Chapter 30 (p. 467)

"The Innocence of Reginald"
Reginald (1904)

Source: Three Comrades

Fear of Flying (1973)