Could be the amount of amnio fluid too. By mid pregnancy the amount increases alot. You might be putting on more weight in the middle too making the uterus a little more difficult to feel. Mine isn't usually hard except when she moves a certain way or I have a BH contrax so I know they can change firmness.
Re: firm tummy?
Caleb Jonathan
Born November 30, 2011
The Winking of an Eye
A blog about the mommyhood, wifehood and lifehood of a misplaced Minnesotan in SoCal