An unexpected difficulty about running while pregnant is somewhat unexpected, but incredibly simple:
Bending over to tie my shoes.
It's not easy at this stage since I have a bowling ball out in front of me that makes bending over kinda difficult in general. Most of the time, I sit on the floor to put my shoes on, but as of late, that's not making it that much easier. Instead, I find that the easiest way is to sit and slip them on, then stand and put my foot on a chair so that I can not only bend my leg closer to me, but so that I can also maneuver the belly around the bent leg.
Running shoes and bowling shoes are the only kinds of shoes I own that require tying; almost all of my other shoes are slip on shoes (and to be honest, I wear flip flops about 90% of the time), but I only bowl once a week; I run about 4 days a week.
Clearly, this is one more reason why I need some helpful gnomes around here -- they'd be the perfect size for helping me out on this one!