My LO is 5 months old and he almost always makes a "umph" sound. Like when he sees his bottle he starts making the noises that sound like "umph" idk if I'm explaining it right lol.. he does it when he wants to be picked up.. when he wants to grab something.. when he sees certain family members.. when he's fussy.. and idk if it's just his way of communicating? Or if anyone else's baby does this or something similar??? How does your baby communicate with you? How often? Makeup be does this sound pretty much all day.. sometimes no matter what we try he still does this sound.. at times it also means he's sleepy.. is this normal or should I bring it up to his Dr?