Fraternal or identical twins?

Maddie • Mama of a beautiful boy & angel twin boys💙👶👼👼🤍👼 Still trying for baby #2🌈🤍

I had my first ultrasound a few days ago and found out we are having twins! At first my doctor throughly they would be fraternal because they each look like they are in their own sac. Then later she said she thought identical because there is only a very thin line between them. What do you guys think, I’ve been trying to research but haven’t been able to find much. I’m still pretty early so it was hard for her to exactly get both of them together in the same picture