Dr wants me to come back for another u/s

I went for my anatomy u/s yesterday and we found out we are having a boy!!! But the dr said she couldn't get a good profile shot bc of his position and she couldn't see one part of his heart bc he was blocking it, so she wants me to come back in 2 weeks to see if they can get pictures of those parts. She said she didn't see any red flags, but of course I'm a little nervous.