Venting-Gestational Diabetes

Well I always had it in the back of my head that it was a very real possibility of having GD. My mom is diabetic (dialysis, lost eye sight, lost kidney function etc.) and I have many family members on both sides of my family that have type 1 and type 2 diabetes. I've always eaten clean and healthy, exercised and kept my weight at an ideal level because of this. This is my first baby and I'm 28 weeks. Just got a call today that I have gestational diabetes and failed terribly. They said it was extremely high and didn't even want to discuss it over the phone. I'm Going in to meet with the doctor, a specialist and a nutritionist on Wednesday to get my plan for the rest of the pregnancy. I didn't think this would bother me as much as it is. Even though this was out of my control I still feel like I somehow failed. I first and foremost want to get this managed and make sure baby is healthy and has no problems. I need to wait to hear what they say but I'm not sure how I'm going to manage my sugars any better than I already am. Diabetes has been surrounding my life for so long and so Im already educated on what to eat and when to eat and I follow that pretty diligently. I'm terrified what this means for me in the future too. I know GD means your significantly more likely to get diabetes later in life and I just don't want the life my mom has. She's so young and lost so much. Could be the hormones but I'm taking this pretty hard even though I know it's very common.