Probably 8 weeks.
Actually at 8 weeks pregnant the fetus would only be 6 weeks old.
For the first 8 weeks the developing human is called an embryo after that it is called a fetus.
fetus
Fetus
An embryo is called a fetus after 8 weeks of development.
29 weeks
10 weeks
17.5mm
An embryo typically develops into a fetus around 8 weeks after fertilization. At this point, the major organs have begun to form and the fetus starts to resemble a human.
Usually this is not possible condition for a fetus
8 weeks
i had a sonogram yesterday and the sac could be seen but no fetus what does this mean
A developing embryo becomes a fetus at around 8 weeks after fertilization. At this point, the major organ systems have started to form and the embryo takes on a more human-like appearance.