Babies form in an organ called an uterus, where the babies are kept in an amniotic sac (their "water"). It is POSSIBLE for a woman to have up to 8 babies.
Most women have a single fetus - one baby.
Some women can have twins - two babies, either fraternal (they look exactly alike) or non-fraternal (not identical).
Then, often with fertility treatments, some women can bear 3 to 8 fetuses as one pregnancy.
The more fetuses that are present in one pregnancy, the higher the risks to the babies and the mom.
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