Your Unborn Baby Week By Week: First Trimester Development

27/03/2013 21:52 | Updated 22 May 2015

Looking down at your tummy and wondering what's really going on inside that teeny-tiny bump?

Here's how your unborn baby is developing from conception to the end of the first trimester at 12 weeks. Prepare to be amazed, there's a lot going on in there even though you may not be showing yet.

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