My guess is that when the baby starts clawing at your insides, that you will become aware of the existence of its fingernails.
are you only getting pregnant so your nails and hair can grow longer?
About 15 to 16 weeks.
In week 9 the fetus begins to develop fingernails and body hair. By week 13 fine hairs begin to grow on the head.
It will develop walking.
The fetus' heart beats eighteen days after conception.
The eyelashes of a fetus develop around week 22 of pregnancy.
A female fetus with an a y chromosome is what makes it develop differently from a male fetus.
The female fetus has a Y chromosome while the fetus only has two x chromosome.
The Gonads
lungs
The Heart.
UterusD
12 weeks
in eight week of pregnancy