Anatomy scan question

Randi

So I went for my scan today and they said everything looked really good. They couldn’t see the left ventricle but assured me that he was fine and it might be too early/too small and he was moving a ton. They didn’t tell me I needed to go back until 28 weeks. Would they have told me I needed to come back sooner if they found anything? Or do they call? Just confused. They didn’t really say anything specific that’s it.

Thanks!