Probably anytime soon. You could ask your doctor at your next appointment
Between 26-28 weeks. At your next apt. They should make the following apt for that! Good luck: -)
I'm having mine tomorrow and tomorrow I will be 27 weeks. It's normally26 to 28 weeks.
In Austria they do it at 24 weeks. I'm in week 21 now!
Here it is anywhere between 24 and 28 weeks. I'd ask your doctor. If you have it then sooner is better in terms of treatment and healthy outcome.
I had gestational diabetes with my first one that went too long undiagnosed. I ended up with complications and premature early c-section. Good chance you don't have it and I hope you don't. Good luck :)