An unborn baby that is less than 8 weeks old, is an embryo, after this it is classified as a foetus.
As on December 5th 2009 the foetus is 10 weeks.
Approximat age of the foetus is 21 weeks as at November 27th
it takes four weeks for the organs of an embryo to form..
As of 28th, April, 2010, the approximate age of the foetus is 22 weeks.
8 weeks
Approximate age of the foetus is 38 weeks.
The babies (embryo) heart starts to beat at about 4 weeks.
May 21st 2010: The approximate current age of the foetus is thirty-one weeks.
There's no set number ! Every foetus is different - movements are independent, random.
September 14th to November 23rd is 9weeks and 2 days approximately or 2months and 12days
It takes many sperm to break the outer barrier of the egg, but only one to fertilize it. When that sperm meets the egg, their genetic material (chromosomes) combine to form 46 and the fertilized egg, zygote, beings to rapidly divide into a blastocyst. After about two weeks it is called an embryo, and after eighth weeks a fetus. After about 40 weeks, it is born and is called an infant.
In humans, the embryo becomes the fetus at the beginning of the 11th week in gestational age (the 9th week after fertilization). This stage starts when the major structures have formed.