P regnancy begins when a fertilized egg implants in the uterus. Foetus grows and changes dramatically throughout a pregnancy.

Pregnancy lasts about 39 weeks, counting from the first day of your last normal period. The weeks are grouped into three trimesters:


First trimester
4 -13 weeks

Second trimester
14 – 27 weeks

Third trimester
28 – 39 weeks

Women go through many changes during each stage of pregnancy. Many of the pregnancy symptoms they have and the changes they deal with are common to all healthy pregnancies. The stages of embryonic and foetal development also follow a common pattern.
Pregnancy can be confusing and sometimes mysterious and it’s normal for first moms-to-be to wonder what happens during each of the stages of pregnancy. Here is a description of the stages of pregnancy and the changes that women go through during a healthy pregnancy.

First trimester – 4 -13 weeks

During the first trimester your body undergoes many changes. Hormonal changes affect almost every organ system in your body. Your period stopping is a clear sign that you are pregnant. Other changes may include extreme tiredness, tender swollen breasts, upset stomach with or without throwing up – commonly known as morning sickness, mood swings and cravings for certain foods. Not all pregnant women will experience these symptoms. Just as each woman is different, so is each pregnancy.

Second trimester – 14 – 27 weeks

Most women find the second trimester of pregnancy easier than the first. But it is just as important to stay informed about your pregnancy during these months. Symptoms like nausea and fatigue might go away, however your body will change in order to make room for the baby in the second trimester. As your body changes you may experience back, abdomen, groin and thigh pain, stretch marks, darkening of the skin, numb or tingling hands and swollen ankles, fingers and face. Before this trimester is over, you will feel your baby beginning to move!

Third trimester – 28 – 39 weeks

By the end of 37 weeks, a baby is considered full term and its organs are ready to function on their own. As you near your due date, your baby may turn into a head-down position for birth. Most babies “present” head down. Babies at birth typically weigh 3 – 4 kg. Most full-term babies fall within these ranges.

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