WolfishMusings: Im not saying this is p’shat but what Outreach613 could be correct.
It says that Shem told Rivka that ‘there are two nations in your womb’
then it says that ‘her time came to give birth and there were twins in her womb’ – it could be that either she gave birth to a still born and then the posuk is refering to after that ‘and there were twins in her womb’ or the torah is only telling us about the ‘alive babies’ so it says that ‘there were twins in her womb’ – two living babies