Second sac on US?

I am looking for someone who knows how to read ultrasounds that could maybe take a look at mine and give me some insight.

I went in yesterday at 6+1 and confirmed my pregnancy with one baby, HR at 111 but there is what looks sort of like another sac next to it ??

I met with the doctor after the US and all he said was congratulations and that he wanted to do another ultrasound in two weeks. I didn’t really notice the “sac” until I looked at the ultrasound when I got home so I didn’t ask my doctor what it could be.

I don’t have the best pictures because the tech zoomed in on the baby but wondering if anyone can tell what the thing to the right is from these photos??