This video explains how the baby develops inside the womb! Just one of God’s many miracles! If you have any questions or comments, please feel free to comment on this video and i will get back to you! First Trimester: Week 1-12 Second Trimester: Week 13-27 Third Trimester: Week 28-40 At 37 weeks, a baby is considered full-term, but full-term pregnancies usually last anywhere from 37-42 weeks