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#Post#: 13--------------------------------------------------
The Two Week Wait [What's really happening inside your body]
By: Administrator Date: February 2, 2019, 8:05 am
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0 Days Post Ovulation
Ovulation occurs and fertilization follows. Egg meets sperm
(typically within the fallopian tubes) within 6-12 hours of
ovulation. A zygote is formed.
1-2 Days Post Ovulation
Cell division (cleavage) starts 24-30 hours after fertilization;
2 cells become 4 cells, become 8 cells. As cell division occurs,
the embryo starts to move through the fallopian tube towards the
uterus.
3 Days Post Ovulation
[/u][/b]While still in the fallopian tube, the embryo is solid
ball containing 12 to 16 cells and is called a morula. The
embryo is encased in a protective coating called the zona
pellucida that prevents it from sticking. The morula reaches the
uterus approximately 2-3 days after fertilization.
4 Days Post Ovulation
The morula is 16 to 32 cells and reaches the uterine cavity
around the 3.5 to 4th day. Here the morula starts to develop
into an early blastocyst. A fluid-filled inner cavity develops
and surface cells form the trophoblast (which will become the
placenta) and the inner cell mass becomes the fetus.
5 Days Post Ovulation
The blastocyst is formed and remains free-floating. The
protective shell around the blastocyst, known as the zona
pellucida, starts to dissolve after arriving in the uterus in
anticipation of implantation. This generally occurs within 72
hours of arriving in the uterus.
6 Days Post Ovulation
The blastocyst makes contact with the uterine lining.
[u]7 Days Post Ovulation
The blastocyst starts to burrow into the uterine lining. This is
also called adhesion and is marked by increased interaction
between the blastocyst and the uterine lining.
❗Implantation cramps are possible. Most likely to occur
days 7-9.❗
8 Days Post Ovulation
The early placenta starts producing human chorionic
gonadotrophin (hCG) hormone. This hormone can be identified in
the blood and urine of the mother as a positive pregnancy test
as early as 8 to 9 days. Earlier detection depends on the amount
of hCG present and the sensitivity of the testing method. With a
very sensitive detection method (most likely blood test), a
pregnancy test can be positive at this stage.
❗Implantation cramps are possible. Most likely to occur
days 7-9.❗
9 Days Post Ovulation
The blastocyst has burrowed into the uterine lining.
❗Implantation cramps are possible. Most likely to occur
days 7-9.❗
❗Implantation bleeding is possible. ❗
10-11 Days Post Ovulation
As the placenta develops and releases increasing quantities of
hCG hormone, the chances of the pregnancy test detecting
pregnancy get better.
12 Days Post Ovulation
A coagulation plug forms to close the area where the blastocyst
entered the endometrium. Implantation is now complete.
14 Days Post Ovulation
Levels of hCG are high enough to be detected by a home pregnancy
test. However, a negative home pregnancy test may be a false
negative. Though hCG may possibly be detected in the mother's
blood from day 8 onward, it is usually tested for about 2 weeks
after the day of fertilization.
Implantation bleeding may occur anytime from day 9 onward when
the developing placenta encroaches upon the mother's blood
circulation, but if it occurs, generally coincides with the time
of expected menstruation.
15 - 21 Days Post Ovulation
The fetus starts developing in length and a body cavity starts
forming. The placenta gets better defined. The heart, brain, and
intestines slowly start taking form.
22 - 28 Days Post Ovulation
The heart has its basic form and now starts beating. This can be
seen on an ultrasound examination.
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[URL=
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