gestational diabetes

I'm 36w & 4d I was diagnosed with GD a while back and I've never had any issues with my sugar except once or twice up until now during this pregnancy. I have a huge family history of diabetics and I had an issue in the past with being juvenile diabetic, the medication they had me on back then made me so sick, but they're controlling it now with just dieting. I obviously know I should tell my doctor but I'm scared they're going to try and put me on the medication to control it and I really don't want to constantly be sick with it. 
Do you think they'll try to control it or induce? Has anyone else had this issue before or is going through it? 
I'm going to call and talk to my doctor tomorrow I just needed some opinions or stories until then.