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4 Weeks
Right now your baby is an embryo the size of a poppy seed.consisting of two layers: the epiblast and the hypoblast, from which all of her organs and body parts will develop. -
8 weeks
breathing tubes extend from his throat to the branches of his developing lungs, and his "tail" is just about gone.You may be daydreaming about your baby as one sex or the other, but the external genitals still haven't developed enough to reveal whether you're having a boy or a girl.Either way, your baby — about the size of a kidney bean — is constantly moving and shifting, though you still can't feel it. -
12 week
Your baby's fingers will soon begin to open and close, his toes will curl, his eye muscles will clench, and his mouth will make sucking movements.His intestines, which have grown so fast that they protrude into the umbilical cord, will start to move into his abdominal cavity about now, and his kidneys will begin excreting urine into his bladder -
16 Weeks
Right now, he's about the size of an avocado: 4 1/2 inches long He's even started growing toenails. And there's a lot happening inside as well. For example, his heart is now pumping about 25 quarts of blood each day, and this amount will continue to increase as your baby continues to develop. -
20 Weeks
He's swallowing more these days, which is good practice for his digestive system. He's also producing meconium, a black, sticky by-product of digestion. -
24 Week
Your baby's growing steadily, having gained about 4 ounces since last week. That puts him at just over a pound. His lungs are developing "branches" of the respiratory "tree" as well as cells that produce surfactant, a substance that will help his air sacs inflate once he hits the outside world. -
28 weeks
measures 14.8 inches from the top of her head to her heels. She can blink her eyes, which now sport lashes. She's also developing billions of neurons in her brain and adding more body fat in preparation for life in the outside world. -
32 week
you may feel your baby's movements subside a bit because there is less room for moving around. At this point in your pregnancy, you may also want to consider a birthing plan so that you, your partner, and your doctor have a plan of action for your delivery -
36 week
She's shedding most of the downy covering of hair that covered her body as well as the vernix caseosa, the waxy substance that covered and protected her skin during her nine-month amniotic bath. Your baby swallows both of these substances, along with other secretions, resulting in a blackish mixture, called meconium, will form the contents of her first bowel movement. -
40 Weeks
The bones in his skull haven’t fused yet — Mother Nature’s way of making it easier to get through the birth canal during labor and delivery. He now has enough fat under the skin to maintain his body temperature outside the womb.
