He's a very chilled out baby and he seems to have no determination to get going. His sister was slow (walked at 17 mths) but she was bottom shuffling round by this stage!
Also when I hold him up by his hands he doesn't step forward at all, just stands rooted to the spot even if you tip him forward a bit!
He's very heavy, tall and has a big head (sounds great, poor DS!) - all reasons that might be slowing him down, but I'm starting to worry a bit now.
Of sourse I'm getting lots of unhelpful comments from other mums but when should I see someone about all this??