Pregnancy trimester Pregnancy trimester
Pregnancy stages of pregnancy week by week

Learn about Pregnancy Trimester during your 40 weeks of pregnancy. Follow your pregnancy stages of pregnancy week by week and learn how your baby is developing in the first, second and third pregnancy trimester of your pregnancy stages.

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Pregnancy Trimester


The three pregnancy trimesters. Pregnancy stages of pregnancy week by week

The characteristics and symptoms of the three trimesters of pregnancy may vary from woman to woman. However, it is worthwhile to be aware of the general trends occurring in each.

1st Trimester Duration: Weeks 1 through Week 13
Pregnancy stages fetal development first trimester

First pregnancy trimester

During the first six weeks, you may not feel any different. In fact, you probably will not know for sure until you miss your period. Then you may feel nauseous and fatigued. During the seventh week, the baby's development begins. He or she will begin growing eyes, ears, nose, heart and other organs. By the eighth week, you will be able to hear the baby's heart by ultrasound.

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2nd Trimester Duration: Weeks 14 through Week 26
Pregnancy stages fetal development second trimester

Second pregnancy trimester

The second trimester lasts from the fourteenth to the twenty-sixth week and is marked by rapid growth of the fetus. The baby's movement occurs during the second trimester at the fourteenth week. As you enter the second trimester, constipation and heartburn affect your body.

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3rd Trimester Duration: Weeks 27 through Week 41
Pregnancy stages fetal development third trimester

Third pregnancy trimester

During the third trimester, you will probably see your doctor more often as it is a time of rapid growth. However, the time is soon arriving so be prepared. Week 27 and 28 will bring further development for the baby's brain and lungs. Your own body will experience breathlessness as the baby grows and your abdomen pushes into your lungs. At this time, the baby will also be able to hear sounds from within the womb.

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Pregnancy Calendar
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28 29 30 31 32 33 34
35 36 37 38 39 40 41

Pregnancy Stages


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