2 minutes, 33 seconds Read


Welcome to pregnancy week 21! As you progress through the second trimester, your baby continues to grow and develop at a rapid pace. In this article, we will explore the key developments during week 21 of pregnancy, including your baby’s growth milestones and the changes happening in your body. Let’s dive into the details of this exciting stage.

Baby’s Development:

During pregnancy week 21, your baby is approximately the size of a banana, measuring around 10.5 inches (27 cm) from head to toe and weighing around 12.7 ounces (360 grams). Let’s take a closer look at the remarkable developments happening within your baby:

  1. Rapid Brain Growth: Your baby’s brain continues to undergo rapid growth and development. The nerve cells are forming complex connections, allowing for the development of senses, movement, and cognitive abilities.
  2. Eyebrows and Eyelids: Your baby’s eyebrows and eyelids are becoming more defined. Although their eyes remain closed, the eyelashes are growing, adding to their adorable features.
  3. Digestive System Maturation: The digestive system is maturing as your baby swallows small amounts of amniotic fluid, practicing for the digestive processes they will use after birth.
  4. Swallowing and Digesting: Your baby’s swallowing reflex is developing, allowing them to swallow and digest more efficiently. This helps in the absorption of nutrients from the amniotic fluid.
  5. Developing Taste Buds: Taste buds are forming on your baby’s tongue, preparing them for the sensation of taste. The flavors of the food you eat can influence their taste preferences later in life.


Maternal Changes:

As your pregnancy progresses, your body continues to undergo changes to accommodate the growing baby. Here are some common maternal changes during week 21:

  1. Growing Belly: Your belly is becoming more noticeable as your uterus expands to accommodate your growing baby. You may start to experience round ligament pain or discomfort as the ligaments supporting your uterus stretch.
  2. Increased Energy: Many women experience a boost in energy during the second trimester. Take advantage of this period to engage in gentle exercises, prenatal yoga, or other activities that help you stay active and maintain your fitness.
  3. Braxton Hicks Contractions: You may start experiencing Braxton Hicks contractions, which are irregular and painless contractions. These contractions are a normal part of pregnancy and help to prepare your body for labor.
  4. Skin Changes: Some women may notice changes in their skin, such as darkening of the areolas and the appearance of a linea nigra (a dark line that runs vertically down the abdomen). Hormonal changes can also cause changes in skin pigmentation or the development of pregnancy-related skin conditions.
  5. Hormonal Balance: Hormonal fluctuations continue during week 21, which can affect your mood and emotions. It’s essential to take care of your emotional well-being by engaging in activities that help you relax and practicing self-care.


As you enter pregnancy week 21, your baby’s growth and development continue to amaze you. Embrace the changes happening in your body and take care of your overall well-being. Enjoy this stage of your pregnancy journey and look forward to the exciting milestones that lie ahead. Remember to consult with your healthcare provider for any concerns or questions you may have.


Aman k. Kashyap

I am a hard-working and driven medical student who isn't afraid to face any challenge. I'm passionate about my work . I would describe myself as an open and honest person who doesn't believe in misleading other people and tries to be fair in everything I do.

Similar Posts

Leave a Reply

Your email address will not be published. Required fields are marked *