could you work out sex from 20 week scan?

[Madigan]

DH and I decided not to find out sex of our baby at 20 week scan ..... but we both reckon we saw pretty clear evidence on the scan showing that it was a boy .... of course we coud be wrong, and we did not want to ask the scanner so we still have some element of surprise left .... but was wondering if any other mumsnetters had similar experience and were you right or wrong???
xx

Yes I spotted that he was a he before the sonographer said anything!!!

I couldn't with my first two but with the third it was very obvious it was a boy.
I actually remember screaming "its a boy" before the sonographer

I didn't want to say anything, as was not sure if DH had seen it too .... but he said he had afterwards. But maybe it was the cord???? Dont' think so, but you never know.
Anyway, DH would be vvvv happy with a boy - I genuinely do not mind at all ............