Possibly another sac?

Nicole
Any sonographers hang out in her for fun? Just wanting to get some opinions on what this is? I had a feeling I was having twins but the sonographer said there is only one. Afterwards I looked at the pictures and couldn't help but wonder what this was. Helpful info: I was 6weeks and 1 day and this was an abdo u/s, she didn't do transvaginal for some reason