Hello again 
The waiting is the worst part, by far. In the weeks running up to my gender scans I spend hours and hours on sites like this and looking up statistics and nub pictures and just generally obsessing and thinking about it ALL the time. All the 'what-ifs' floating around and also the fear that the hope that is still there could be snatched away. Not a fun time, for me anyway!
I was too scared to find out the gender with my DD (and so the obsessing lasted the whole pregnancy, smart move on my part - not! haha) and waited until birth but this time I was desperate to know as having a boy would mean major re-changing of bedrooms etc and I just really wanted to know. I had such bad butterflies at the scan and the little monkey had her legs crossed and we couldn't tell at all!! We really couldn't afford it but I went behind DH's back and had a private gender scan done a week later, I just Could Not stand the suspense a second longer, told DH after and he rolled his eyes but then admitted that he'd hoped it was a girl so he didn't lose his study!!
I wish you the very best of luck on Monday, I know you will love whatever the baby is but I also know a little girl would be wonderful for you. Would you be planning on having any more after this one?