I had GDM during my pregnancy too, mummy ❤️ Besides watching my diet, I found that a short walk after meals helped my blood sugar levels a lot.
My baby's tummy was measuring ahead as well, which made me worry, but with regular monitoring and good sugar control, everything turned out fine. I ended up having a vaginal birth, though I know other GDM mummies who had C-sections too. Try to focus on keeping your sugars within target and follow your doctor's advice. You've got this 💪💕