This might sound a bit odd but I'm appreciating your description of how visceral (and not even metaphorically) an experience this is. Big thing growing in the middle of you all wriggling around and getting in the way and having to try and work a digestive system around it and suchlike. Not that I'm likely to be pregnant any time soon but I think I'd enjoy the doing-a-giant-experiment-with-my-body side of it.