If the egg fails to fertilize, the hormone levels will drop
and lead to next menstrual cycle. The thickened line in the uterus also gets shed
during this period.
Once the sperm and egg gets united, they are ready for a new
life. From a single cell, the egg
divides itself continuously to form more cells. When the cell count reaches 100
or more, it becomes a mass called embryo. After fertilization, embryo takes 5
days to reach the uterus and now it is called blastocyst. Through genomic
activation, the embryo activates its own genes for cell division and finally
forms into a blastocyst. While the inner cell mass of blastocyst develops into
fetus and the outer layer or trophoblast, develops as placenta. The actually
pregnancy happens when this is attached to the uterus wall. In some cases,
formation may happen in fallopian tube itself which requires immediate medical
Points To Be Remembered:
the eggs are released, it can survive for 12 to 24 hrs. This is a crucial time
for an egg to fertilize. An egg should meet a healthy sperm on its way to
fertilize and settle in uterus to conceive.
Millions of sperm enters woman’s body but during their journey
towards the egg, many sperms gets destroyed, trapped, or lost and only one
sperm unites with the egg. Also, it is the type of chromosomes that are present
in the sperm decides the gender of fetus. While an X chromosome in sperm
produces a girl baby, Y chromosome results in a boy baby.
periods are missed, HCG (Human Chorionic Gonadotropin) urine test can be done
with home pregnancy test kit or in a lab. The positive result of the urine test
indicates pregnancy. Even if the results are negative but if all pregnancy signs
are experienced, then it is advisable to wait for another week and repeat the
tests. It is always better to take a test after 10 days of the missed period.