She reckons the method is to only do the deed pre ovulation date and not post. Lots of people swear by this method but I’m not sure. Seems like a longer way of trying to me.I am 99% sure they had the type of IVF where you pick the sex you want so I don’t think that’s true. It would be very lucky that you had three kids and them all be your preferred sex (She’s dropped hints about this)