Eventually it will be. The remains will start to decompose and you will get a infection that will spread to the blood and cause blood poisoning. You risk both sterility and life if it's not removed. You will experience discharge with a foul odor and fever and pain.
8 weeks
A fetus is a fetus until it is born at which time the umbilical is cut and it becomes a child. An other argument is that the foetus ceases to be a fetus at the time it is a viable human being and can live without the mothers support.
For the first 8 weeks the developing human is called an embryo after that it is called a fetus.
i think you have to leave them with the mothers for a couple of weeks to a month. they have to stay with the mom for awhile,
At 12 weeks of development, a fetus does not have the neurological development to feel pain.
the fetus will start kicking around 25 weeks
2 weeks
normally a fetus is 5.6 cm on average
fetus
29 weeks
Fetus
10 weeks