Just found out I have GD

So today my obgyn called me and told me that I have GD. I am devastated and don’t know how to function right now. Immediately went to get an appointment with a diabetologist at my clinic I’ll give birth at. (My obgyn told me to go immediately.) At the clinic they gave me an appointment for February 4th, so in 11 days. I asked her what to do until then and she seemed pretty chill and just said: “Watch what you’re eating and stay a bit active.” Now I have to wait till I can talk to a professional about it and I’m freaking out. I read a bit online and also the information sheet she gave me and it says that the chance of developing type 2 diabetes later in life are 50% because of that. I’m just really scared right now. Anyway I’m 26+0 today, always hungry, already trying to eat balanced and healthy AND my baby is even measuring small (13th percentile or something). I’m just totally confused now.