There is not a website or magazine or book about twin- or multiple pregnancies missing the detail that it is very much different from a singleton pregnancy - for the mother. Still even the well-known National Geographic DVD on multiples states that the twins grow in the womb without ever knowing of each other.
This is - of course - not true. If a twin-pregnancy is different for the mother it is even so for the babies. They grow and develop in precisely the environment described as different from a singleton pregnancy and therefore their development is different from that of a singleton-fetus. Within the first three months of pregnancy almost the entire physical development of the human body takes place. After that it's mostly growing. During this crucial time a twin-fetus' body, every organ, above all the brain, develops in the described environment different from that of a singleton-fetus: the womb inhabited by twins. The twin-fetus becomes provided for a twin-life, it's body is shaped under twin-conditions and if there is a soul at all that is not miraculously inserted into the body at birth it undergoes the same process.
When twinloss occurs - especially during this crucial time of the first three or four months - the world the twin-fetus was shaped for suddenly no longer exists. It comes to this world fully equipped for a different one: a twin-world.
And here I am asking myself why I so often feel I am living in the wrong world ...