The guessing game is 50-50. Boy or girl. Will surely hit pple right... If sala, they can say u dunno exactly when u "concieved". Keke.
Its jus for fun la. When i had #2, i was reading those gender sway articles. Then u realise nature makes things v complex... There are so many factors as to why u have a girl or boy (from ph values, bedroom positions, diet of both partners, the season, the moon position, postive/negative ions, the deed is before during or after ovulation, balh blah) i see until my eyes drop.
In any case sometimes is 注定 or fated...