My friend's mum told me a lovely story about having her non-identical twins at home. It was in the late 1950's and twins had not been diagnosed. N had given birth to a boy and the midwife yelled down the stairs to the new dad "Congratulations, you have a son. Can you bring us all a cup of tea?" She went back to N, realised there was another baby on the way and, just 5 minutes after the boy, delivered a little girl. She yelled down the stairs again, "Well done, you've got a beautiful daughter and we really need that cup of tea!" The new dad appeared and said "Make your mind up; first it's a boy, then a girl, can't you tell the difference yet??" and was promptly presented with two babies.
Good luck with your babies, Bubble99.