The first three months of pregnancy are filled with lots of firsts -- some not as great as others. Take a pregnant pause and see how you score on your first trimester knowledge.
By Week 10, if you were to look closely at your baby, you'd notice she doesn't look like a tadpole anymore. Her embryonic tail, at the bottom of the spinal cord, has disappeared and her rapidly developing spinal nerves have become visible. What else can you see? See more »