Baby would not move in correct position for NT Scan!

I am 12 weeks 4 days. I had my NT scan done today and my baby was so lazy, covering their face,and then turning their back to us. The nurse poked my stomach and everything. Baby was so stubborn and would not move to profile position to get measurements for scan. Baby's heartbeat was 158, which is normal.I have to go back in one week. Has anyone else had this experience with a stubborn baby?