Miraculously, a baby's development in the womb progresses very quickly through three trimesters. Each period of three months is a trimester in the duration of pregnancy. For example, the first three months of a baby's development in the womb is in the 1st Trimester. Click on each of the monthly embryonic developments for an unborn child to see a baby's progress. Amazingly, a baby's heart begins to beat after only three weeks!
The embryo’s arm and leg buds become visible, and the neocortical cells appear. The baby’s blood flows in their veins, separate from their mother’s blood. Learn More
Facial expressions start to resemble those of their parents. Vocal cords and external sex organs become visible, and this is the earliest stage where gender can start to be determined. Learn More
Most mothers are now able to see fully see the gender of their baby at this time. Movements are now becoming stronger, and most first-time mothers will start to feel the baby’s kicks and movements in the womb. Learn More
All senses are fully functioning, and toenails and fingernails are complete. This is the first month your baby may drop lower in your pelvis, which is called “lightening.” Learn More
