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I made 5 women pregnant, but only one gave birth. My vault can fit 34 dwellers and I only have 27 (31 if the babies would be born).

Why won't the remaining 4 women give birth?

marked as duplicate by galacticninja, Robotnik, DJ Pirtu, 5pike, Arperum Jun 18 '15 at 8:42

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The answer is living quarters, this expands the number of people you can have.

I had waited for 6 hours for 11 pregnant women to give birth - as soon as I put in a few living quarters I had 11 births within 3 minutes.

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