My DS keeps putting his fingers so far down his throat or up onto the roof of his mouth he gags, and eventually throws up. We keep pulling his hand/rattle away when we catch him doing it or distract him, and obviously the word 'no' just illicits a big grin from a 6 month old. He loves his food and milk and is a happy wee soul. He has always been a 'happy puker', (slight reflux) so isnt bothered by throwing up at all. Is this just a developmental 'I'm working out what my hands/mouth/body does etc' or is it odd....