The answer is YES!  Can women have fraternal (non-identical) twins?  Of course!  This happens when two eggs are released and two different sperm fertilize them.  If a woman had sexual intercourse with two men within the window of opportunity, then it is possible for each of those eggs to be fertilized by different fathers.

Does this need to be in the same day?  The answer to that question is NO!  Sperm can survive for 5 days in a woman’s body.  The eggs can live up to 48 hours.  This means that you could have intercourse 5 days ago, have intercourse again with a different person days later.  You ovulate with two eggs and become pregnant with both eggs.  What are the odds?  Does it matter?  It only takes one sperm out of thousands to make it through. 

I am sure this happens more times than is reported.  I can’t imagine too many women coming forward that they cheated on their spouse, after the birth of their children.  That is most likely a secret that no one will ever know.

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