I never really asked with any of my two.
With Kieran I just had a gut instinct from day one it was a boy, so much so I never picked any girls names at all

.
And again with Lauryn I wasn't so sure but probably about 90% of me thought it was a girl, again I only picked girls names, hadn't a clue what I'd have called her if she was a boy LOL
I had 20 wk scans with both of them because there's a history of downs in my family. Kieran I could have asked ~ they asked if I wanted to know but I said no.
Lauryn,
DH asked if they could tell what it is and the girl said yes but they're not allowed to say,
DH said we thought it might be a girl and she gave him a look and shrugged but it looked like she was saying we were right.