Before we start talking about the weekly pregnancy calendar let us understand what is a pregnancy calendar and why do one need to use it. A weekly pregnancy calendar is a week-by-week record of the early pregnancy symptom, pregnancy symptom and other sign of pregnancy. With the help of the weekly pregnancy calendar you can easily understand regarding the changes in the body of the pregnant woman along with the changes in the embryo or fetus in the pregnancy period. It will give you the weekly detail of these changes taking place in the pregnant woman. By learning about the weekly pregnancy calendar you also come to know that there are so many facts that you need to understand about the baby and you yourself as well.

How To Calculate The Weekly Pregnancy Calendar?

First of all we should understand the method of calculating the weekly pregnancy calendar. It is the date of your last menstrual period that marks the beginning of the weekly pregnancy calendar. This is the date that is also used for the doctors for predicting the probable date of the birth of the child. This shows us that how important the weekly pregnancy calendar has become in our lives. Naturally, the very first question that strikes our mind after the pregnancy is confirmed is that what is the due date at which the new child will arrive in this world. This date is approximately forty weeks from the arrival of your last period.

Helps In Keeping The Record Of The Development of The Baby

However, we should not assume that the due date predicted with the help of the weekly pregnancy calendar is flawlessly accurate. This is because it is just an indication when the child will arrive. The actually date of the delivery may vary anywhere between the 38th week and 42nd week after the last period. In addition to the prediction of the due date weekly pregnancy calendar also helps in keeping track of the development of the baby along with the mother.

Understanding The Term Trimester

While understanding the weekly pregnancy calendar we should also know about the terms semester or trimester used while describing the weekly pregnancy calendar. A semester or trimester refers to one of the total three parts in which the overall period of pregnancy is divided. The period from the first week of the pregnancy to the twelfth week is called the first trimester. Second trimester is the period of pregnancy from the thirteenth week to the twenty-sixth week. The period from the twenty-sixth week to the birth of the child is known as the third trimester. The period between the 39th week and the 42nd week is also called the critical period.