Week 21. Baby: Your baby is steadily gaining fat to keep warm. ... If your baby is a boy, their testes have formed but remain in their abdomen. Baby makes strong kicks and turns.

21 signs you’re having a boy: ... baby boys have an average heart rate of about 154.9 bpm, ... done as early as 10 weeks, can reveal your baby’s gender with over 99% accuracy.

Bradi did not deliver the baby that day. At just 21 weeks along, she was put on bed rest, where she'd stay for another week. ... The tiny 1-pound, 7-ounce baby boy named Kai was a fighter.