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The umbilical cord has formed, and the mouth, nostrils, ears, and eyes are some of the facial features that become more defined this week. The arm bud now has a hand on the end of it, which looks like a tiny paddle.
Your baby measures about 0.6 to 0.7 inches from crown to rump and weighs around 0.1 ounces. Your baby may make some first movements as muscles develop, but you won't feel them for several more weeks.
In amniocentesis, doctors take a sample of the amniotic fluid that surrounds a baby to check for signs of problems such as chromosomal disorders, genetic problems, and neural tube defects
A chorionic villus sampling (CVS) checks cells from the placenta for chromosomal abnormalities. Most women whose pregnancies are not high-risk don't need this test.
