Welcome To Week 6 Your Baby: Forming New Features It's been four
weeks since you conceived, and the embryo is now six weeks old.
(Remember, the age of a fetus is calculated from the beginning
of the last menstrual period - not from the actual date of
conception, which usually happens two weeks later.) Still less
than 1/5 of an inch long (4 to 5 mm), it has tripled in size and
is starting to look somewhat familiar. The brain is developing
distinct areas, and the eyes and ears are beginning to take
shape. Even at this early date, the heart is being formed and is
starting to pump blood at a rate of about 150 beats per minute.
The backbone, ribs, and muscles of the back and sides will grow
out of 40 small blocks of tissue that are developing along the
fetus’ future spine! Your Body: Deciding On A Doctor Nothing is
more crucial to your pregnancy than getting good prenatal care.
That means choosing a compatible health care provider who you
can call whenever you have questions or concerns about you or
your baby. In