Gestational diabetes

Has anyone experienced Gestational Diabetes? I failed my glucose test by 15 points so I’ll have to do the 3 hour test. Has anyone experienced failing the 1 hr test but passed the 3 hr? This is my 5th pregnancy. I’m 30. I have never had issues with blood sugar or even gestational diabetes. I have no family history of diabetes. I don’t even eat sweets and when I do it’s rare and I walk daily! I know the placenta hormones throws off a lot of things in your body, I’ve just never had any issues before. She’s weighing 1 lb 1 oz a couple of weeks ago and she should have been weight 12-13 ozs so that’s what made them want to test me for GD.