Fetal Development When Entering the Second Trimester of Pregnancy

Written by: Redaksi Klikdokter.com

Pertumbuhan Janin Saat Memasuki Kehamilan Trimester Kedua

The pregnancy period is normally divided into three trimesters. Each of these trimesters has the characteristics of fetal developments. In addition, Mommy will feel the change of different conditions in each trimester. It is important for Mommy to know the details of the changes in each trimester to maintain good pregnancy. Mommy can also ask for help more quickly if the undesirable things happen. 

The second trimester of pregnancy begins at 4 months of pregnancy. At this age, the developing fetus is beginning to show the human form of the full version. Fingers and toes of fetus are completely formed. Eyelids, eyebrows, eyelashes, nails, and hair have started to form. Fetal bones and teeth are increasingly dense. At the age of 4 months of pregnancy, the fetus may even have started sucking the thumb.

Fetus can move and even yawn. Facial expressions are also beginning to appear at this age. The nerve system of the fetus has begun to work in the second trimester. In this trimester, the reproductive organs and genitals have also been formed completely. Thus, doctors can help Mommy predict the sex of the fetus by using ultrasound. At the end of this period, the length of the baby can reach 6 inches. At that time, the baby can weigh 400 grams.

During fetal development at the age of five months, the hair on the fetus’ body starts to grow. The skin is coated with a sort of whitish coating to protect the fetus’ skin. At this age, you begin to feel the fetus move. The fetus reaches 10 inches long while weighing up to 200-450 grams.

At the age of six months of pregnancy, the fetus has reached 12 inches long with the weight 900 grams. The skin is reddish and wrinkled. The blood vessels are visible through the fetus’ transparent skin. At this age, the fingerprints are already noticeable. In addition, the eyelids start to get apart and open. The fetal movements have also been more intense. 

During the second trimester of fetal development, Mommy will experience some changes. These changes include breast enlargement and abdominal growth. Changes in the Mommy’s skin also begin to appear. The changes are in the form of dark spots around the breasts and stretch marks. Mommy may also be experiencing problems with nose and gums, dizziness, leg cramps, and shortness of breath.