The pregnancy, which lasts for nine months, usually involves stages and developments for the fetus. It also changes the pregnant mother. The most important months to pay attention to are the first three months.
The stages of the fetus during the first month
The fertilized egg is attached to the wall of the uterus five days after one week after fertilization of the egg by the semen. This is called nesting, and then the fertilized egg begins to grow towards the uterus cavity, which doubles in size almost every day to form the embryo. The umbilical cord contains blood vessels that transport nutrients and oxygen to the fetus. During this period, the amniotic fluid, which is a bag containing liquid, is formed. This sac and the liquid in it contain the fetus’s protection and movement.
One week after the embryo forms, the spinal cord or spinal cord begins to form. A few days later, some of the vertebrae form the spine. The nerves begin to form, and when the fetus is six weeks old, it has a head and a neck.
By the end of the fifth week the medulla becomes composed of three layers: the outer layer consists of the brain, nerves and skin, the middle layer that will form the bones, muscles, blood vessels, heart, and genitals, the inner layer consists of stomach, intestine, liver and lungs And the urine, and then start the eyes and the rest of the features of the face form and the buds of the four limbs as well as the heart, but heartbeat can not be heard this month.
Size of the fetus
The length of the fetus at the end of the first month of pregnancy is about 1.25 cm (125 mm), weighing about 28 grams.
And the pregnant mother to review the obstetrician in order to confirm first of pregnancy and assess the overall health of the mother, as pregnant in this month may feel some fatigue and tendency to sleep, and it changes mood, and anxiety, and tension, You may experience nausea, vomiting, stomach cramps, indigestion, abdominal bloating, cravings or lack of appetite for some foods. Pregnant women should be careful to take folic acid.