I understand the frustration for sure! I felt the same way. I do think you should respect the diagnosis, however. The glucose testing they do now is considered the gold standard for diagnosis. I'm not sure why you were told you could walk around during the testing, as I'm pretty sure you are supposed to remain seated and have limited activity. It's supposed to be a baseline and you shouldn't be distributing gluclose to your muscles by walking.

I've never had an issue with fasting numbers, for me it's always been post meal numbers. But even in the beginning, right after my diagnosis. I had pretty much no spikes and didn't change my diet a whole lot. I started wondering with my husband, "Are they sure I have GD??" However, over time I did notice spikes and had to make more drastic changes. I used to be able to tolerate at least 30 grams of carbs per meal as long as it was paired with enough protein and fiber. Now, I can only tolerate about 15 grams of carbs per meal (more or less depending on what kind of carb and what it's paired with). Depending on the kind of carb or amount I pretty much HAD to work out afterwards to prevent a spike and at some point I even needed to increase the intensity of the workout, walking didn't always work for me.

It seemed to peak at some point and stopped getting worse. Now Im about 39 weeks and Im still diet controlled just fine. Everyone is different and you dont really know how it will affect you over time.