If its a boy, at 14-15 weeks can confirmed already. For my #1, my gynae told me she is 100% sure its a boy at 15 weeks (that was my first visit to her then). I guess maybe 13 weeks, will know already. If its a gal, it takes a while longer coz gals tend to close legs as there is nothing between the legs to spread their legs apartWoah! U confirm boy Liao arh.. So gd! I also waiting for know.. But last scan can't see yet.. Detail scan will be in jan next yet.. Have to wait for so long..