I've actually been thinking about growing pains as well. logan doesn't complain while in his carseat... but he says that his "leg fell asleep" a lot... and eventually I asked him about it... I squeezed his foot... and he said it didn't hurt... so I squeezed his calf... no pain. So i asked him where it hurt.. and he said his thigh.
I wonder if his legs are growing really fast or what. I do know that according to his growth chart, he's grown a full inch since August... and his pants are getting short.. so maybe?