Yep - I've had the aches and leg cramps too. The leg cramps went away with extra magnesium (upped the banana intake). In my last pregnancy I ended up with aches up and down my forearms which the midwife saide were carpal tunnel or OOS related. Apparently pregnancy can help start all of this stuff up. She recommended extra rest, a hot-water bottle to keep the areas warm and being extra careful not to strain anything extra.
Good luck!