I had my 19 week scan a while ago (I have 4 weeks to go) and it was hard for the sonographer to determine the sex as the babies legs were crossed and it's hands were there too. She then said to me "I THINK it's a boy", rather than "it is a boy". I believe that she wouldn't have told me anything if she didn't see something to determine that answer, but after reading and hearing about people who have been told wrong it has made me question all my blue stuff inthe drawers!! I just think the word 'think' has made me question....??