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Dr. Marjorie Greenfield
Specializing in pregnancy and birth.
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* See all questions answered by Dr. Greenfield




Ask Dr. Greenfield

Getting Pregnant While Already Pregnant
QUESTION
Dear Dr. Greenfield,
How rare is it for one to get pregnant a second time once they are already 31days gestational with the first baby?

— Curious Mom-to-Be in WI

ANSWER
February 28, 2002
Dear Curious Mom-to-Be,
It is totally impossible to become pregnant once you are already pregnant. The hormonal changes that start as soon as conception occurs prevent new eggs from maturing and being released. There are very rare cases of twins conceived from different fathers, but these acts of intercourse were within a few days of each other, fertilizing two different eggs that were released at the same time.

I hope that this answers your question.

— by Marjorie Greenfield, M.D.

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