hiya Jaqueline. Not sure if I can answer that reliably, but I'll try!
I asked if I'd need to have a full bladder as I had to call them anyway (I had to phone the day before to ask what time as I'd totally forgotten
)
I was told that some sonographers like you to have a full bladder, some don't (I always thought it was down to the type of scan machine, not the sonographer - but perhaps I'm wrong
) So, she said to turn up with a full bladder but maybe go to the loo if the sonographer asked me too.
I absently mindedly went to the toilet not very long before we were dure to leave for the scan. So I downed loads of water, hoping to refill my bladder! When I got there I don't think much of it had got to my bladder.
The sonographer didn't mention bladders at all. About 10 minutes after the scan I was desperate for a pee!
We got seen really quickly. Worth mentioning perhaps the form they give you with scan results e.g. nuchal measurement & length of baby, they take off you a few minutes later when they take blood (they get sent off together) so if you want to read it, do it there and then. I would have studied it harder (or perhaps taken a pic) if I'd realised it was about to disappear!
Good luck, I hope all goes well :)