Gestational diabetes so early

Momma
I'll be weeks weeks on Sat and I was diagnosed last week with gestational diabetes. Already insulin resistant and over weight. I lost 7 pounds in the last week. Not on purpose but carbs were my main food source before I got pregnant. Haven't heard the heartbeat yet, only saw it at 6 weeks 2 days. Have this nagging fear baby didn't make it. Just trying to get through the next 30 weeks.....seems so far away!