28 week appt today. My blood sugar has been crazy so I belive they start me on medication. I'm also very concerned about…

28 week appt today. My blood sugar has been crazy so I belive they start me on medication. I'm also very concerned about his growth due to the GD. I feel like he is big already and was measuring 2 weeks ahead at 24 weeks. Then gained 7lbs within 3 weeks, so want to see if I can have a growth scan before 35 weeks. Cause last time they scheduled a growth scan for when I was pregnant with my daughter was supposed to be March 10th I didn't make it past 35 weeks and had her Feb 25th. So I don't think it's unreasonable for me to request it.