Week 6: The embryo is about the size of a pea or a lentil, 5 millimetres. The jaw, chin and cheeks are starting to take shape.

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I walked into the library and as expected it was dead quiet. I greeted the librarian at the front desk.

"Hi." She smiled politely.

"Hey Kyla what can I do for you?" I pulled out my book.

"I just came to return this and get a new one." She took it and started typing.

"You're a fast reader I see." She handed me back the book. "Please put it back and take another." I nodded.

I walked to the familiar shelf and put...