My SIL (sort of) had alot of complications, and she was able to find out at 13 weeks I think in Melbourne? I think they have to have a special type of machine or a very skilled sonographer! Otherwise I think its the old 18 week scan - and even they can be wrong! I think they only definite way is with the Amnios, or something where they acutally take some of the babies blood?? Not an expert - sorry!
I'm changing my mind about finding out. I thought I wanted to - but I think I'm not gunna.... Something someone (i think it was Sarah?) said about buying more clothes...... I just can't afford it! The C/C is more important!