Development of a Baby Fetus at 6 Months

In the sixth month of pregnancy, the uterus grows to about the size of a basketball.

During the sixth month, a pregnant woman begins her third trimester, and the fetus continues to develop, put on weight and gain fat at a rapid rate. During these weeks, pregnant women begin to feel increased movement, as the baby grows physically stronger and prepares for life outside the womb.

Size

Though her weight isn't much more than a large piece of fruit, a 6-month fetus measures about 13 1/2 inches long. By the end of the sixth month, a fetus is likely as long as 15 inches. During the next three months, she will continue to put on fat. This will help her look more like a newborn baby. In the sixth month, a fetus usually weighs about a 1/2 to 2 lbs, according to Babycenter.

Features

While the baby is growing, her hair continues to grow, and Babycenter says that it's color and texture are becoming more obvious and defined. The nerves inside the fetus' ears are continuing to develop, so her hearing is becoming more sensitive. Her lungs are developing as she inhales a small amount of amniotic fluid. This practice will prepare her for her first gulp of air after birth.

The fetus' eyes and brain are developing, too. His eyes can regularly open and close at this point. He will also begin to grow eyelashes during this time. As his eyes develop, he might be able to discern light through the womb. Growth in brain tissue makes his brain extremely active.

If the fetus is a boy, his testicles will begin to descend into the scrotum, according to Babycenter.

Movement

The fetus will also be quite physically active during this time, and some health-care providers advise their clients to count kicks at a specific time of day to monitor the fetus' movement. Women who notice a decrease in movement are often encouraged to contact their health-care providers.

Time Frame

During the sixth month, a pregnant woman will be anywhere from 25 to 29 weeks pregnant, according to Babycenter. During this time, the third and last trimester begins. Babies born during their sixth month of development have a high chance of surviving with the help of a hospital neonatal intensive care unit (NICU).

Effects on Mother

During this time, the uterus of a pregnant woman will be about the size of a basketball. Because ligaments are starting to stretch more, some women experience itching or uncomfortable sensations. Some women begin to experience heartburn, bloating or indigestion as their uterus grows.

References

• Babycenter: Your Pregnancy: 25 weeks
• Smart Momma: Fetal Development