How does the baby grow inside womb?

First Trimester (Weeks 1-12)

* Week 1: The fertilized egg, now called a blastocyst, implants in the lining of the uterus.

* Week 2: The embryonic disc forms, which will eventually become the baby.

* Weeks 3-4: The neural tube, which will become the brain and spinal cord, begins to develop. The heart starts to beat, and the limb buds appear.

* Weeks 5-8: The baby's major organs begin to develop, including the lungs, liver, kidneys, and stomach. The face begins to take shape, and the eyes, nose, and mouth form.

* Weeks 9-12: The baby grows rapidly and begins to move. The fingernails and toenails appear, and the hair begins to grow.

Second Trimester (Weeks 13-27)

* Weeks 13-16: The baby's body begins to fill out, and the limbs become longer. The baby's movements become more coordinated, and he or she may start to suck his or her thumb.

* Weeks 17-20: The baby's skin becomes thicker, and the hair on the head begins to grow. The baby's eyelids open, and he or she may start to cry.

* Weeks 21-24: The baby gains weight rapidly and begins to store fat. The lungs continue to develop, and the baby may start to breathe.

* Weeks 25-27: The baby's brain develops rapidly, and he or she may be able to recognize voices. The baby's movements become stronger, and he or she may start to kick and punch.

Third Trimester (Weeks 28-40)

* Weeks 28-32: The baby continues to gain weight and grow. The lungs are fully developed, and the baby may be able to breathe on his or her own.

* Weeks 33-36: The baby's body becomes rounder, and the skin becomes smoother. The baby's movements become more vigorous, and he or she may start to turn over.

* Weeks 37-40: The baby is ready to be born. He or she may weigh between 6 and 9 pounds and be between 19 and 22 inches long.

Other Notes:

* The baby's growth rate can vary from week to week.

* The information provided is a general overview of fetal development. Individual babies may develop at different rates and may not follow this exact timeline.

* If you have any questions or concerns about your baby's growth or development, please talk to your doctor.