16 Weeks Pregnant: Key Facts and Fetal Growth

Fetal Development at 16 Weeks

At 16 weeks pregnant, the fetus is about the size of an apple, measuring approximately 5.31 inches (13.5 cm) in length and weighing around 2 ounces (56 grams).

Key Takeaways

• Neck and Spine Strengthening: The baby's neck muscles and back bones have become stronger, giving it more control over its head movements.
• Increased Breathing Movements: The fetus's diaphragm is now fully formed, allowing it to practice breathing movements.
• Fetal Heartbeat: The fetal heartbeat can now be detected through a Doppler ultrasound.
• Sex Determination: In some cases, the baby's sex may become apparent through an ultrasound.
• Growth Rate: The fetus is growing rapidly and will experience a significant weight gain in the coming weeks.