Baby Developing inside you

Fetal Development


Baby developing inside you
over the weeks and months
 baby inside


 

Weeks, Months and Trimesters Guides

 
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Week Three: Cells Join, Divide - New life begins

  
egg fertility fertilizesperm cells3 weeks - Once a month around the 14th day, one of the eggs travels down into the fallopian tube. This is ovulation. If in the next 36 to 48 hours just one of the 350 million sperm in the average ejaculate can get all the way from the vagina through the uterus and into the fallopian tube to penetrate the egg, the egg will become fertilized. Sperm can live for up to 5 days in this environment, therefore making pregnancy possible for up to 5 days after intercourse.

cells divideThe fertilized egg immediately begins dividing and floats down into the uterus. Immediately upon fertilization your little one is set as a boy or a girl. Ladies, this is one that you can not take credit for since it is up to the sperm to determine the sex of your baby. Sperm carries either a "X" (girl) chromosome or a "Y" (boy) chromosome.

The sex of your baby is predetermined by the fathers sperm chromosomes.

day3 - 8 cellsThe cells contains all of the genetic information (DNA) necessary to become a child. The baby begins to form from this single fertilized egg, the cell starts to divide itself into 2 cells, then 4, 8 and so on rapidly. Forty-six chromosomes combined, which pre-determine all of a person's physical characteristics. The fertilized egg is still rapidly dividing as it floats down from the fallopian tube and towards the uterus. The embryo first moves into the uterus at about 80 hours after ovulation. The implantation process begins about 3 days later. When it reaches the uterus, the fertilized egg burrows into the lining of the uterus.

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Week By Week Pregnancy Calendar

 
First Trimester
Week 1   Week 2   Week 3   Week 4   Week 5   Week 6   Week 7  
Week 8   Week 9   Week 10   Week 11   Week 12   Week 13
Second Trimester
Week 14   Week 15   Week 16   Week 17   Week 18   Week 19   Week 20  
Week 21   Week 22   Week 23   Week 24   Week 25   Week 26
Third Trimester
Week 27   Week 28   Week 29   Week 30   Week 31   Week 32   Week 33  
Week 34   Week 35   Week 36   Week 37   Week 38   Week 39   Week 40
 
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