Seriously, mumofmonsters, I agree your HV is doing you a real disservice here.
If you had had some more sensible advice, I'm sure you would be feeling less stressed by this point.
I think I've been fairly lucky in this regard. You can phone the SALTS any time and they say short sensible things like:
"Yes, those traits are autistic traits. They are also however traits of a much larger subset of young children than those who later go on to be diagnosed as autistic" [this at 2.6, a low point]
ie they don't give you crap about "individuals" but rather acknowledge your concerns whilst reminding you not to jump to conclusions.
Similarly my HV asked me "do you have concerns about his behaviour?", listened, then just said "fine, that's close observation done, which is all you can do as a parent, the SALTS are the next step, go see them on Thurdsay".
which is what you need really, isn't it, rather than lectures about your ability to relax.
It's horrible being caught up in the "am I in denial or betraying my child?" roundabout isn't it?