no idea is that ur 12 wk scan?
i tried to guesswith my last one but, i the baby is at and angle that u cant see any of its bits lol sorry
plus ive read that at 12 weeks even if they tell u at a scan its only 42% correct because the stump that develops into either male or femlae doesnt lookthat different at this stage which is why when u get to 20 wks the chances of determing the correct sex is about 70%
i tried guessing with mine, thankfully i was wrong lol