Gestational Diabetes Test, anyone else fainted??

I literally fainted about 20minutes after finishing the drink! Had ringing in my ears, got really hot and and fell off my seat with all these black spots in my eyes. It all happened so quickly - the first 20minutes I felt literally fine and was reading a book in the waiting room! I didn’t even mind the drink at all either. It was actually quite nice haha. Apparently they said some people can’t handle the sugar overload. I felt fine again after about 10minutes. Was very embarrassing though!!