Good to hear you are accessing all the medical info. I feel guilty now that I wasn't so thorough when I refused my GTT. As it turned out, there were no problems anyway, but possibly I could have been given / sought out more of the facts.
I refused because I am unable to fast at the best of times, let alone also look after my 2 yo DS having fasted overnight, drive a car, etc etc.
I was in the normal BMI bracket, had a really good diet, no family history, no ethnic history, 1st child was fine, etc.
The GP didn't seem overly concerned, he tried to persuade me once but could see I wasn't going to change my mind unless it became medically necessary.
I also regularly looked at the symptoms for GD but they didn't apply.
I didn't get the birth I wanted - but that's a whole other story! Try to stay open-minded about your birth plan, if you can whilst rending assertive of course!
Congratulations!