I had an experience similar to Tiggy's. My daughter born in 1995 was a boy!!!

I would not regard the early scan as accurate. I have worked with a fetal med obs and he is outraged by the number of women told prior to 20 weeks that they are having a particular sex. It is simply not accurate.

The later the u/s the more likely that you will get an accurate result. At 16 weeks the baby is only about 16cms long so the penis if there is one is minute. Even on fabbo equipment this is extremely difficult to predict accurately.

If your u/s place uses state of the art equipment and there is a good visual of the pubic area a result at 20 weeks is likely to be quite accurate.
As Kelly says this can still be wrong - however these days the accuracy rate is much much higher than ever before.

to you with this confusion...