Ds is 19 mo and has yet to say one recognisable word. He babbles back and forth in conversation and makes lots of different noises and tones.
He was at the later end of 'normal' to hit milestones (sat up 71/2 months, rolled soon after this, bum shuffled at 11 months and was a very proficient bum shuffler until he finally walked at 18 months, waved and pointed at 14 months)
I know I shouldn't but I did consult Google, but upon googling 19 month old lack of speech it brings up a whole host of results, autism being a major one. I don't thinkautism is a problem though (he points both for what he wants and just to 'show' us, understands basic one step instruction, points if I ask where is dog, teddy etc. sociable, plays appropriately with toys, no obsessive behaviour or obsessions (although he does love cars but not more than any other 19mo boy!) generally easy going, good sleeper, pretend plays, gives me and others toys to show) and from what I understand these are all good signs, right?
My hv got me concerned when she asked if he could scribble with a crayon (nope, he holds the crayon a mimics the action of scribbling but he doesn't apply enough pressure to make a mark, -and then he just eats them-) she also asked now he was at feeding himself (he can use a spoon, but only for yoghurt 
eveything else is with his hands, but I find when he does use it he seems to only ever use his left hand and turns the spoon upside down as soon as it reaches his mouth, making quite a mess - he does the 'scooping' action to pick up with the spoon though ) she also commented on the fact his ankles collapse inwards when he walks and so when he does walk, bare in mind he has only been walking unassisted for 3/4 weeks now, he kind of waddles and seems very heavy on his feet almost flat footed like. She mentioned something about slight 'low tone'. Again upon googling this is linked to other developmental problems. She's referred us to a Dev paed at the hospital just for a check but lord knows how long this will take and I'm now left a complete stress that something is wrong and I've not noticed it...please someone who has experience of this let me know what the outcome was...