thebump.com:Your baby is growing like mad, putting on about a millimeter every day and continuing to straighten out in the trunk. Though you can't feel it yet, baby is moving those little arms, legs and (now only slightly) webbed fingers and toes like crazy.
fitpregnancy.com:
Your baby is now about three-quarters of an inch long. As the embryo enters its fiftieth day of existence, it becomes known as a fetus. A membrane lid covers your baby's eyes. Your baby's muscles are beginning to develop, and she can make tiny movements. Your child's limbs are growing, but her arms and hands are forming more quickly than her legs and feet. The hands are actually still known as "hand paddles" and look just like they sound. Ridges have formed on the paddles, which will soon become well-defined fingers. Your baby is developing little dimples where her knees and ankles will go, and her elbows are becoming visible. This week is when sex characteristics begin to assert themselves, and ovaries or testes will soon appear (though an ultrasound won't be able to detect specific sex organs for another two months or so). Your baby's brain waves can now be detected.
