NST at 33 weeks

I found out at 30 weeks that I have gestational diabetes and have been testing my blood sugar and diet controlling. I was scheduled today for my first NST and during it the nurse asked me if I had been scheduled for my next appointments, I hadn't, she schedules me for NSTs twice a week until my cesarean at 39 weeks. Who all has had to go through this? Is it excessive or am I just being overly sensitive?