Just read your next bit... OK, I will admit that LO (girl) was doing most of that at 19 months (she has an older sister though and wants to be as grown up!!) HOWEVER absolutely everyone comments on how advanced she is for her age (and I do run a bit of a bootcamp - LOL). She is not yet potty trained.
However, girls are generally a bit quicker with most things.
My friend with the LO who is 2 was just saying today he's the last one out of her AN group to do everything!! LOL from rolling over to talking and EVERYTHING in between, laughing, she said she didn't actually know why she'd let herself be pressured into getting his (lack of) speach checked out as he was last to do everything else, why wouldn't he be last to do this too! He is a lovely little boy, bright, charming and certainly lets you know what he wants!! He doesn't do any of those other things either...
Other friend with the 3 YO her little boy is lovely too - he doesn't dress himself, isn't toilet trained etc
Also, doesn't say much, doesn't sing nursery rhymes and doesn't say his name are all the same thing.... overnight you will wonder why you even gave it a second thought and will wonder what you can do to get him to STOP talking
Don't let the bastards grind you down!!
(Actually you're probably too young to get that!!)