I'm getting really paranoid, Leif keeps banging his head on the floor, i usually put cushions or a duvet around him to prevent it but a couple of times recently i havent been at home or he has been on his changing mat and i or my oh take our eyes of him for a second and hear a nasty bang and he has fell backwards and banged his head or forwards and hit his face on the floor I'm worried one day he is going to be seriously injured. Its making me feel like i am doing it all wrong.