Glad the scan put your mind at rest a little Lake, hopefully it was just a one off - as someone else mentioned, increase in blood flow down there etc. fingers crossed, rest as much as you are able given a stressful job!
Rhiannon I was exposed to slapped cheek when I was pregnant with DS but cannot remember how far gone I was at the time.
All I wanted to say is that I knew more than the GP
I insisted on blood tests being taken and she said there was no need, perfectly safe etc. I kept on at her until she contacted the national disease type people (sorry, cannot for the life of me remember their name). They confirmed everything I had said and that it was vital she did it quickly. I was not immune and probably should not have been at work (teacher, so huge possibility of being affected).
They did give me extra scans all the way through to check that there was no extra fluid and I was under consultant care for that (and another health) reason.
Anyway, long story short, make sure that your GP properly listens to you and ask them to double check with who they need to. If you still aren't sure then please do contact someone you trust.
Don't want to scare you as chances are so small but wouldn't like for your GP to try and fob you off like mine did. Someone at my school had been affected in the last so I knew enough to be insistent.
I changed GPs pretty quick after DS was born!
Hope your appointment goes ok in the morning.