About 1lb
For the first 8 weeks the developing human is called an embryo after that it is called a fetus.
Fetus
fetus
After 8 weeks
Usually this is not possible condition for a fetus
8 weeks
8 weeks
i had a sonogram yesterday and the sac could be seen but no fetus what does this mean
The embryo weighs 1 gram between 5-8 weeks. A fetus is far bigger than one gram.
A human fetus that is 26-29 weeks gestation has an average weight of 1110-1350 grams.
Well, it seems like after the 8th week it's called a fetus, but before it's just an embryo.
The development of a fertilized egg starts out as an embryo though after 8 weeks it is legally considered a fetus.