Pregancy Calendar: A calendar of each week of pregnancy. What to expect in each trimester.
The first weeks and Month of pregnancy:
During the second week, estrogen triggers your uterus (as it has each month
since you started menstruating) to form a lining of tissue. This also raises
levels of the hormone progesterone and prepares the uterus to receive a
fertilized egg. The lining of your uterus gets thicker as the egg prepares to be
released from the end of your ovary into the fallopian tube that leads to your
uterus. The ovaries ripen eggs in fluid-filled sacs called follicles and it is
during this brief period that your body's preparation can result in conception
once sperm meets the egg.
The Third Week of pregancy:
It is during this week that you actually became pregnant (the egg meets the
sperm)! You probably will not know you are pregnant for a few weeks, though some
women swear they know the exact moment they conceived. Around mid-cycle (day 14
of a typical 28-day cycle), you ovulate and one of your eggs is swept into your
Fallopian tube. In the next 12 to 24 hours that egg can be fertilized. After the
egg is fertilized it implants itself in your uterus. Sometimes there is a slight
amount of bleeding when the egg is becoming implanted, but this is perfectly
normal.
Once fertilized, the egg is called a zygote, and immediately closes its outer
membrane to the rest of the sperm that have made it this far. It then begins
dividing into identical cells and will begin the 7 to 10 day journey down the
Fallopian tube to the uterus, where it will continue to grow. Once it has
implanted, the fertilized egg is called a blastocyst.
The baby’s sex is
determined at the time of fertilization and is determined by the type of sperm
that fertilizes the egg. Y-Chromosome bearing sperm will produce a male and
X-Chromosome bearing sperm will produce a female.
Most women are not aware that they are pregnant until about four to six weeks
after conception. By the end of this week, you may notice that you have missed
your period. Whether you are aware of it or not, hormone levels start increasing
in your body as soon as the egg (ovum) attaches to the inside of your uterus.
This helps the uterus maintain the pregnancy. The walls of your uterus become
spongy and thicker, creating the perfect environment for the growing fetus.
The Fifth week of pregnancy
The baby is now called an embryo. It is now possible to differentiate between
the head and the tail of the baby. It is divided into three layers that will
later form organs and tissues. Low on the sides of the head are two folds of
tissue that will become the ears.
The central nervous system (brain and
spinal cord) is forming along with muscle and bone. The baby’s skeleton will
begin to take form. The heart and the circulatory system begin to appear and the
heart will begin to beat this week. Also, the lungs, intestines, and beginnings
of the urinary system are just beginning to form. In the meantime, the early
version of the placenta, the chorionic villi, and the umbilical cord, which
delivers nourishment and oxygen to the baby, are already busy doing their jobs.
Quick-Guide Pregnancy Calendar For each trimester
More coming soon.
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pregnancy-early-signs-and-symptoms
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topic
(and commonly misspelled words): pregnancy, early signs of
pregnancy,
early symptoms of pregnancy, pregnency calendar, pregnancy calender,
pregancy calendar, pregnacy calendar, pregacy calandar early symtoms.
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