I just found out I have gestational diabetes: Advice?

I need advice/reassurance. I was just diagnosed with gestational diabetes. I have an appointment set up to go talk to someone about it & to get my test equipment. I’m scared to death of this! I’ve never been through this, not even with my other pregnancies. I went as far as googling (I know probably not a good thing), and it scared me even more because I’ve read where it can cause stillborn and where there is a 5% chance that the baby could only live a few months after birth. Is all of this true? Can some mothers give me feedback was their child good? Did your child survive this? What happened at your first appointment? Help me, please