The start or beginning of any pregnancy can be detected in various ways; one of them is pregnancy tests, which can be through urine or the blood. This test can be done either in the clinic or at home, which ever way; both tests can only detect the state of pregnancy and not the age of the pregnancy.
Pregnancy test is very important and necessary because it helps to detect the hormones that is generated by the placenta which is been formed newly as a result of the fertilization that just took place. To determine the start or beginning of any pregnancy is often convenient from the first day of your last menstruation (LMP) and this alone is can be used to calculate the Expected delivery date (EDD).
In a normal situation, your pregnancy is considered to last for at least 40 weeks starting from the last Menstrual Period or 38 days from fertilization date. But in case of premature and post mature delivery, the case is difference in the sense that the baby comes as early as 37 weeks for premature delivery and as late as 43 weeks in case of postmature delivery or prolonged pregnancy. There are some tests that determine the age of the pregnancy fairly accurate but to be sure and certain, last menstrual period (LMP) as reported by you as a woman typically expressed the age of your pregnancy but the exact date of fertilization may be unknown if your recent sexual activity is limited.
In a nut shell, for you to determine the beginning of your pregnancy depends on the missed period and your last menstrual period (LMP) and to determine the Expected Delivery Date is also determined by LMP as reported by you to you doctor. Since this is the case, you as a woman has to study your body very well and avoid any non-challant attitude towards your cycle so as to be accurate in all your reports to enable you have exact date of delivery.
To learn more visit
http://birthdefectcauses.blogspot.com
http://www.pregnancy-guidelines.com
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