Dating - Ultrasound Share

Hi all! I'm worried my ob dated incorrectly. The first appointment we had with him, he was using a new ultrasound machine for the first time, and the second time he couldn't figure out how to populate the due date measurements. I'm going to share my 6 week, and then the next ultrasound that was taken a few weeks after. If you all have ultrasounds between 5 and 12 weeks, would you mind sharing so I can compare for peace of mind? Thanks!