By seven weeks, your baby has grown into an embryo about the size of a raspberry and has a tiny beating heart. He'll be growing very fast in the next few weeks.
Your baby is now about the size of a kidney bean and is constantly moving and shifting. She has distinct, slightly webbed fingers.
By now your baby is about 2 inches long -- the size of a lime. His skin is still transparent, but his face is beginning to look more human.
Your baby is now about 4?inches long -- the size of an avocado. Her heart is pumping about 25 quarts of blood each day and her body is covered with a layer of downy hair called lanugo.
A protective substance called vernix caseosa now coats your baby's skin. He's about 10 inches long from head to heel (at 20 weeks we measure from head to foot instead of head to bottom).
Your baby is nearly a foot long now and weighs more than a pound. Her red, translucent skin is wrinkled and her lips, eyebrows, and eyelids are distinct.
By now, your baby weighs about 2?pounds and is nearly 15 inches long. His body fat is beginning to form in preparation for life outside the womb.
Your baby may have hair or peach fuzz on her head now. She's probably turned head-down in preparation for birth. She may weigh almost 4 pounds.
At nine months, the average baby is more than 18 inches long and nearly 6 pounds, but babies vary widely in size at this point and it's nearly impossible to tell how big yours is.
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