For pregnant women, having a week by week guide is a great tool to monitor the baby’s growth. This is also of great help in determining the different symptoms that happen at certain pregnancy stages.

Since the baby’s growth manifests from one week to another, it would be a practical guide for every expectant mothers. The entire pregnancy period is divided into three trimesters that is made up of 40 weeks. Pregnant women could be guided by week by week information on how the baby should look like at different points. If you noticed that there is something wrong on what the baby should appear, you could immediately consult a doctor to give the needed medical attention. Let’s take a look at some major changes that you should expect from your baby during the forty-week time frame of pregnancy.

The pregnancy’s first trimester encompasses the first to fourteenth week of the pregnancy. Essentially, the first two weeks covers the period from your last menstruation to the actual conception. The conception refers to the period when the sperm was able to fertilize the egg. When the third week ends, the fertilized egg becomes an embryo. Meanwhile, by the fourth week, nausea could start to manifest. The fifth week signals the formation of the baby’s organs. After a week, heart beats of the baby begin. By week 7, the size of the baby doubles. On the ninth week, the gender of the baby can be determined already.

The second trimester, meanwhile, covers weeks 15 to 26 of the pregnancy period. The organs improved. By week 17, the baby starts to blink and swallow. This stage is when the eyes and ears start to function well.

During the last trimester, which covers the 27^th week of to the last week of pregnancy, the senses of the baby develop. By week 27, the baby can have more movements inside the wombs. By week 34, the baby starts to develop his or her immune system. Most babies are born during the 40^th week, but the period could extend for up to two weeks.

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