I'd like to start by firstly apologising as this is likely to be quite long. And also to say that I absolutely don't want/expect anyone to try to diagnose over the internet. But over a long period I've had so many people tell me that DS2 is 'fine' or 'at the late end of normal' that I've got to the point where I'm confused and doubting myself and often don't know what is 'normal' and what isn't.
So...
DS2 is 2.3. He's a very happy and loving little boy. I've had concerns about him since he was tiny but for a long time I couldn't put my finger on what it was (and even now when I look back I still don't know what it was).
As he started to reach milestones he was consistently hitting them just within what's considered 'normal'. He sat at 7/8 months, commando crawled at 10 months, crawled properly at 11/12 months and walked at a few days short of 18 months.
At his 1 year check he was behind on everything except fine motor skills. I was told he's fine and would catch up. At his 2 year check he was significantly behind on everything but fine motor skills (which were actually advanced). The HV came to do an 'emotional social' questionnaire which he just scraped through but a lot of the questions didn't really apply to him. As a result she wouldn't refer him.
Physically he's got a very big head and a very prominent forehead. He's also rarely does a normal poo (sorry for tmi but they're usually quite squishy). He also struggles with steps. We live in a ground floor flat so don't often do flights of stairs but even stepping up or down a kerb is hard for him and he either needs help or takes a very long time to build up to taking the step.
His speech is very, very delayed. He has approx 10 words and most of those only I understand. I've done loads of research and I can't find anything that fits with his delay and the way he talks.
He doesn't like other children although this is starting to get better.
He doesn't like getting messy.
He doesn't like people (other than me and DS1) walking behind him.
If we're walking by a wall he'll always walk right up against it.
He still puts everything in his mouth.
Positives are he can sign and pick up signs very quickly. He doesn't sign accurately but they're consistent.
His understanding is very good (I'm not an expert but I'd hazard a guess at being advanced).
He likes adults and makes good eye contact with them.
He's also recently discovered a love of trains. I'm not sure if this is normal or not but he won't go anywhere without as many trains as he can carry, often his first word in the morning is 'oo oo' (choo choo). If there are trains available then he plays with them and hardly plays with anything else.
He's on the waiting list for SALT and has very recently been referred to the CDC.
Sorry this has been so long. I'd really appreciate any thoughts. And please feel free to ask any questions as I'm sure there are things I haven't thought of because they're just normal to us!
TIA