Fetal Development Timeline

This is the process of the sperm fertilizing the egg.

Every month, both ovaries in a woman's body release a mature egg.

The egg releases to be fertilized by a single sperm in the Fallopian tube.

Once the sperm makes it's way to the egg and penetrates it, the egg surface will change to prevent another sperm from coming in. This is when the genetic makeup happens and determines the gender.

This is when the rapid process of division begins after the egg is fertilized.

This is when the fertilized egg attaches to the lining tissues of the uterus. The cells still continue to divide.

The cells produce HCG and it eventually forms the placenta. This is when the woman can start taking pregnancy tests.

You can now call the baby a fetus. There is already a heartbeat and the baby is already about a 1/2 inch long.

You can now detect a heartbeat during an ultrasound. The baby's heart and brain begin to develop.

The baby's spinal cord and backbone begin to develop. Also, the amniotic sac and fluid are forming. This is to protect and provide cushioning for your baby.