little nervous now

We had our growth scan today. Cooper is measuring about 7lbs7oz. They noticed that a vein in his liver is looking larger than they like it, and now we have to go see a specialist. My dr said he is not overly concerned since he is a big baby, and everything looks big. They just want us to have a second set of eyes to confirm what he believes. Has anyone else had this happen? What was your outcome? Ahhh stressing out over it.