I have looked at alot of the different methods and am finding them all abit contradictory, i looked in to shettlers but i have found that the success rate isnt as good as they make out and more boys are concieved than girls, one lady had six boys using this method befor trying something different to finally get a girl, its called o+12, has any one heared of it.
The calender that i was looking at are predictory and tell you when your af is to arrive when you are to ovulate and what days to bd to get a boy or girl.