What would happen if two eggs were released but only one was fertilized?

If two eggs were released but only one was fertilized, the fertilized egg would begin to develop into an embryo, while the unfertilized egg would simply be shed during the menstrual cycle. The body would typically recognize the unfertilized egg as non-viable, leading to its eventual expulsion. As a result, only the fertilized egg has the potential to develop into a pregnancy.