|
Likely Date of
Immaculate Conception
: Monday, January 17, 5 BC
|
 |
|
By the end of the first month after conception, a simple
functioning circulatory system has developed in the embryo.
The spinal cord is closed and the embryo is 1/6 inch long (4mm). At the
end of the second month the cardiac valves
and four chambers of the heart are established and functioning. Nervous
system development has begun, and so has
motor activity. In month three, the fetus jerks its body and flexes its
tiny legs and arms. Weight is 3/4 ounce
(21 grams), about the same as a letter.
|
Ultrasound Images during First Trimester
|
Click here to
learn how your develops during month 1
|
 |
Click here to
learn how your develops during month 2
|
 |
Click here to
learn how your develops during month 3
|
|
End of First
Trimester
: Monday, March 27, 5 BC
(12 weeks)
|
 |
|
During the fourth month the fetus reaches almost 6 inches
(15cm) in length. Arms and hands are fully shaped with
fingernails. Feet and legs are fully molded, and hair has already
started to appear. In the fourth and fifth month
the fetus begins reacting to sound, and hair becomes courser and
colored. In the sixth month the fetus is over
12 inches (30 cm) long. The thumb is actively involved in grasping. The
inner ear is structurally capable of functioning. |
Ultrasound Images during Second Trimester
|
Click here to
learn how your develops during month 4
|
 |
Click here to
learn how your develops during month 5
|
 |
Click here to
learn how your develops during month 6
|
|
End of Second
Trimester
: Monday, July 10, 5 BC
(27 weeks)
|
 |
|
In the seventh month taste has probably been established.
From now until term, fetal length increases from approximately
13 to 20 inches and weight nearly triples. By the eighth month lungs
are maturing and the fetus continues to practice
the motions of breathing. On the average, delivery occurs at 40 weeks,
although there is a normal variation of
two weeks on either side (38-42 weeks).
|
 Ultrasound Images during Third
Trimester
|
Click here to
learn how your develops during month 7
|
 |
Click here to
learn how your develops during month 8
|
 |
Click here to
learn how your develops during month 9
|
|
Estimated Due
Date
: Monday, October 9, 5 BC
(40 weeks full term)
|
