Say what you will about Tumblr, but it's a goldmine for original pregnancy content. Here are a few good pages:
http://nerdynympho87.tumblr.com/ (Currently pregnant)
http://allaboutme-justforyou.tumblr.com/ (Currently pregnant)
http://retifist.tumblr.com/ (Posted pictures of his pregnant wife)
http://hornylittlemilf.tumblr.com/ (Formerly pregnant)
http://daddyslilfuckslut.tumblr.com/ (Formerly pregnant, A+ content)
http://tsnider30.tumblr.com/ (Posted pictures of his pregnant wife)
http://nerdynympho87.tumblr.com/ (Currently pregnant)
http://allaboutme-justforyou.tumblr.com/ (Currently pregnant)
http://retifist.tumblr.com/ (Posted pictures of his pregnant wife)
http://hornylittlemilf.tumblr.com/ (Formerly pregnant)
http://daddyslilfuckslut.tumblr.com/ (Formerly pregnant, A+ content)
http://tsnider30.tumblr.com/ (Posted pictures of his pregnant wife)
Movies with real pregnant bellies:
https://letterboxd.com/belliesrlovely/list/real-pregnant-bellies/share/O8XqXaBHPipuZmCL/detail
https://letterboxd.com/belliesrlovely/list/real-pregnant-bellies/share/O8XqXaBHPipuZmCL/detail