Oh I am sorry your 'friend' was so insensitive i think people are just not thinking.
You know I got some comments that weren't that nice as well after we announced this one is a girl. My mother in law said " You know it's not 100%, right?" and my sister in law totally misunderstood me when i said i found it hard to believe and said "Yeah, i bet you're worried she will grow a willy between now and your next scan" I then said well normally they don't at this stage and she replied " Maybe, it's just developing late" I just replied confident that I had seen the 3 lines and felt confident it was a girl but i must admit that i complained to DH after and watched the DVD again! Yesterday I watched it with my older boys that are 12 and almost 15 and i showed them a pic of DS3 where you see he is a boy, VERY obvious turtle and then i felt better, that was not at all what we saw and she looked SO carefully, i doubt it could have been hiding.
So yeah, just ignore her, as PP have said already, she is just jealous. My family in law are actually really nice and were also very happy for me so it wasn't the only thing they said, DH thinks they are just worried i will be disappointed. I think they are insensitiv but oh well...
I'm sure you will get confirmation today and after that you'll be able to relax. BIG hugs to you!