(Use 49 as a constant/ add the lunar month of conception/ minus lunar age of you at the time of conception/ add constant 19)
The above is a very old traditional gender calculation passed down from the olden days, they say the people in the palace used this method to calculate the gender and it was pretty accurate. Guess they have to be accurate if not the king may jail or execute them when the baby gender comes out not as predicted!
Of course I’ve no preference if mine’s a boy or girl as long as baby is healthy. But out of curiosity, I’ve done my sums and we’ll just see if it’s accurate by the time I do my scan! 🙂