Fourth month
The fourth month of pregnancy begins from the thirteenth week to the sixteenth week, and each week is characterized by new changes and developments in the shape of the fetus, its size, and the growth of organs that have begun to form in his small body, accompanied by hormonal changes and physical exposure to the mother during this period of pregnancy As a result of the continuous growth of the fetus within the uterus which we will explain in detail and precise:
Week 13
- The bones begin to form the cartilage and the chest bones begin to appear.
- The child can open and close his mouth.
- The genitals are fully formed and can now determine the sex of the fetus.
- The baby produces insulin, which controls the amount of sugar in the blood.
- The child is 7.62 cm long and weighs 28 g.
- Start with fingerprint configuration.
- The muscles begin to grow regularly.
- The fetus can reach out and kick his leg.
Week Fourteen
- The length of the fetus is 9 cm.
- It weighs 45 grams.
- The eye begins to take its place in the center of the face.
- The nose is more visible and the ears are full of growth.
- The cheeks are visible.
- Poetry begins to grow.
- The child begins to urinate inside the amniotic fluid.
- The child makes breathing movements.
- Male embryos are the prostate gland and female embryos ovaries.
- Head hair and eyelashes.
- The bones become stronger and stronger.
- The child’s skin is transparent and covered with a luster covering the whole body.
Fifteenth week
- The fetus is now 10 cm long.
- The embryo grows to a weight of 75 g.
- At this stage, the fetus can move its hands and open its fingers and catch it.
- Finger and hand nails appear.
- His skin remains very thin.
- His legs grow longer than his arms and his body.
- Bone and marrow that the skeleton is growing continue.
- The ear bones begin to stiffen and the ears take their proper place.
- Start feeling light movement and light knocking in the womb as a result of fetal movement but do not be afraid if you do not feel this movement.
- The upper lip is completed.
Week Seventeen
- The length of the fetus becomes 12 cm.
- The weight increases to 100 g.
- The embryo is covered with a soft layer to maintain its temperature.
- Fat begins to form under his skin.
- The fetus hears external sounds as he sleeps and dreams.
- The fetus now learns how to breathe and shows it through the movement of the chest and inhalation and output to a small amounts of amniotic fluid and movement
Helps the lungs develop.
* The facial muscles are now more sophisticated and show some features more clearly.
- The fetus can hold his hand and kick and comb.
As your baby grows this month as well, the uterus and placenta grow and your belly becomes clearer. Your weight in this month is expected to increase between 0.5 kg to 2.5 km