Had a terrible morning really fighting my exhausted 9mo baby to take a nap. Finally seemed to have settled and went downstairs where I heard some weird banging, came back up and he had sat himself up and was quite gently in a sleep like state banging the back of his head on the cot bars. As soon as I lay him back down he was asleep. Would this worry you? He's crawling and babbling and trying to pull himself up, he's very social and can clap, wave, kiss (lunge at you with a wide open mouth on request) and feed himself finger food. He has just got out of the habit of shaking his head in a no like fashion when really tired. When he gets excited he flaps his arms up and down a lot but this has got less since he is mobile. He had a bit of a traumatic start to life but has been signed off as a healthy baby, does this sound ok to you? He is also teething. I love him so much but hate the anxiety.