The feelings you describe are perfectly normal. /it is the hope and angst all rolled into one.
Equally, you were likely to have been wound up so far in 'preparation' for bad news at your scan it will take some time to really 'hear' that all was good.
I hope this helps a little.
Every Woman is entitled to understand what happened in her pregnancy when pre eclampsia strikes. I hope to be able to support that process.