Yesterday at my dr I had another ultrasound after having one January 21st, I was reading my appointment cards bc they schedule 2 ahead of time and I have two more ultrasounds back to back?

I have a NT scan at 12 weeks in 20 days, then another scan at 16 weeks but it doesn’t say what for. I know at my first ultrasound the 21st they said that baby was measuring 6 days behind and changed my due date to September 11th, then yesterday they changed it back to Sept. 5th bc the baby was measuring perfectly on time at 9w4d.

Has anyone else had to have 4 ultrasounds in a 2 month time span?

I’m far from complaining ab how many I’m just worried that they aren’t telling me something.