I would be more worried about the risks to bub when its born if you did have undiagnosed GD? IYKWIM. I too am overweight and was more overweight last pregnancy and I didnt have GD, not even close.
Yeah, that.

I was the same with my pregnancies. #1 - quite overweight and stacked on a chunk more weight - no GD, pretty much perfect results. #2 - Still overweight but smaller and more active - excercise & sport. - Bad results. GD. Luckily I had mine controlled with diet and excercise.
Even though some people aren't that lucky and with diet and exercise their levels just rise no matter what they do.

It's hard to tell sometimes.

Everything is so stressful. I can totally imagine how you felt lighter after your decision though.
I'm a stresshead and all that too.