Looking for advice or similar experience. I had GD in my first pregnancy, diet controlled and our LO was 7 lbs 7 oz at exactly 41 weeks.

I'm now 34 weeks 3 days, but this little nugget is measuring 3 weeks ahead and is already in the 95th percentile at 6 lbs 3oz. I passed my 3 hr glucose, no gd this time around. My OB had me get an ultrasound to confirm size, check fluid, etc and all looks good and I'll have another ultrasound in 4 weeks. Because all checked out, I was told that sometimes people just have bigger babies, because there are variations. I've asked my OB a few times if I could have developed GD after doing 3 hr glucose test at 30 weeks and he said no. Is this true? Has anyone had this experience and it truly was that they just had a bigger baby or should I push more about getting checked yet again for GD? Just not sure and a bit nervous about it all. Thank you!