The 26th week of pregnancy marks a significant phase for both the baby and the expectant parent. It is a period characterized by rapid development and noticeable changes. This stage often highlights the remarkable journey of fetal maturation, as the baby continues to grow and refine various systems in preparation for life outside the womb.
Understanding Baby’s Size
At 26 weeks, a baby typically measures around 13.6 to 14 inches (35.1 to 35.6 cm) from head to heel. The average weight falls between 1.7 to 2 pounds (approximately 760 to 900 grams). To visualize this size, one might compare the baby to a spaghetti squash, a head of kale, or even a red cabbage. This rapid increase in size is largely due to the accumulation of body fat and the ongoing development of internal organs.
The growth observed at this stage is crucial, as the baby is actively building reserves that will support its development after birth. Fat deposits are forming beneath the skin, which helps in temperature regulation. While these measurements provide a general idea, individual baby sizes can vary based on several factors, including genetics, parental height and weight, and ethnicity.
Key Developmental Progress
During the 26th week, the baby’s brain activity is becoming more complex, allowing the baby to hear and respond to sounds. The eyes, which have been closed for some time, are beginning to open, allowing the baby to perceive light.
Lung maturation is also progressing, with the production of surfactant beginning. Surfactant is a substance that helps the air sacs in the lungs inflate and prevents them from collapsing. The development of hearing is refining as the neural network connecting the brain and ears completes its formation, allowing the baby to distinguish between voices. The baby is developing more defined sleep-wake cycles.
How Growth Impacts the Expectant Parent
As the baby grows larger, expectant parents often experience more pronounced physical changes. Fetal movements become more coordinated and powerful, including distinct kicks, rolls, and stretches. These movements can be forceful, potentially causing discomfort if the baby’s limbs press against internal organs or ribs.
The expanding uterus, about 2.5 inches above the belly button, can lead to increased pressure on the expectant parent’s internal organs. This pressure can contribute to common discomforts such as heartburn, indigestion, and frequent urination. The shifting center of gravity can affect balance and lead to back pain or leg cramps. Braxton Hicks contractions, often described as a tightening across the belly, may also become more noticeable as the uterus practices for labor.