A member asked:

Can a woman get pregnant with a baby while already pregnant with another child?

A doctor has provided 1 answer

No: The material that forms the placenta and fetal membranes sends out hormones that prevent another egg from being released. There are conditions where twins are forming when one will be well nourished and actually steal some of the nutrients from the other. The starved twin grows slower and will be smaller at delivery. The "placental steal" accounts for the difference in baby size, not a later pg.

Answered 3/18/2014

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