Signs of Diabetes

Silly question but are these signs of having gestational diabetes? 7

I am being tested for gestational diabetes next week. I am considered high risk for developing it because I am over 25 (I am 27), there is a family history of type 2 diabetes, and both my biological grandma & mother developed gestational diabetes during their pregnancies. Now I am paranoid that I have it, and have been consciously watching my carbs & sugars.
I have gained 26 pounds (gradually), and I measured normal at 24 weeks. I am 5′10" and weighed 150 prepregnancy with a very athletic built.
I have been getting comments from people that I am huge and/or I am going to have a big baby. Is showing significantly and my weight gain indicators that I might have gestational diabetes? Any one else been told they are considered high risk for gestational diabetes but didn’t end up getting it?
Thank you for all of your help.

Hey, wasn’t even told I was high risk and I had it. I’m 27, weighed 112 before pregnancy and 140 when I gave birth and I’m 5′3". So I was skinny everywhere except for my belly. I was border line gestational. I had to take a class on how to watch carbs.
Don’t eat anything with carbs the night before the test. if you fail the first one, Eat something like Cheerios the morning of the second test.
When I went to take the class, I was the only skinny prego in there, so there is a possiblitly. Good, luck. I’m sure you will be fine. My son and I are!