hey lovely you described boof to a t !!
he is doing the same thing
i had to stay at kinder with him on tues
also very clingy and didnt want to go to playgroups either for the past few weeks
he doesnt want to go anywhere , he is out of sorts as well
i am tipping his 4 year olds coming through, developmental changes and a growth spurt
my other two went through it as well
and yes it could be a virus chucked in as well
you had bloods done for her not long ago and nothing showed up (elevated white cell count is an indication of something going on)
Viruses cant be treated with meds - you can only treat the symptoms for relief

I started giving boof some rescue remedy to help him emotionally, and trying to get some multis in him as well.

hang in there love
xxxx