Alice Meynell - Maternity.

ONE wept whose only child was dead,
New-born, ten years ago.
"Weep not; he is in bliss," they said.
She answered, "Even so,

"Ten years ago was born in pain
A child, not now forlorn.
But oh, ten years ago, in vain,
A mother, a mother was born."

Alice Meynell

http://www.poemhunter.com/poem/maternity-2/