Just had 20 wk scan. I made the decision to find out the sex right from the start - dh decided today about 3pm that he wanted to know too. Had scan about 4pm and the umbilical cord was between its legs. that and its little hands! The midwife really persevered but couldnt see a thing.
I know its not the end of the world and it will be nice to have the suprise - but I'd got all excited about finding out
Ah, how disappointing for you. Perhaps the following story may be of some consolation: A couple I know were told at 20 weeks that they were having a girl and bought all pink stuff, only to give birth to a boy! They brought the wee feller home in a pink babygro and flowery hat.
We went for a Baby Bond Gender Scan at 25 weeks just to confirm what the 20 week scan told us. Nice and unrushed and significantly cheaper than 4D. Obviously different areas will be different but on our experience I would recommend them.