I'm a little nervous

Cheyenne
I had my first ultrasound today. Came with a full bladder. Babes heartbeat was 135. I'm 7 weeks 4 days. She didn't give me any pictures. And she told us she's not allowed to tell us anything per my OB's request. She also told us that she'll send the ultrasound pictures to the radiologist so he can read them and then the doctor will call us. Before we left she told us not to worry about anything. I'm just curious as to why they have to be sent to the radiologist first? My sister in law had the same doctor as me and her first ultrasound they gave her pictures right away. Should I be worried? 😔 Also I'm a twin and have twins in my family. I did tell the ultrasound tech that I was a twin. So maybe she saw two and needs a second opinion?