Thank you everyone. I feel much better about our medicals.
I downloaded our medical forms from the document checklist page however, my daughter form has my father in laws name and d.o.b. on it - weird.
I have had to download a blank form for her. We have contacted diac but they won't get message until Monday. My father in law isn't even coming with us??
Anyway after reading through the form it doesn't even mention BMI on it, maybe its because we are going on a temporary visa?? who knows.
Anyway thanks again everyone, I look forward to a sleep tonight.