Husband was watching him play in the tub and he slipped and hit his head trying to stand, the corner or the tub, 5 minutes later it's already purple and goosed up! Is he okay? We just spent over 6000 on a goose egg in February just for them to tell us he's fine (we figured but the pediatrician made us go in) so I'm a little hesitant but also worried. What should I be looking for?