My wife and I are expecting our first child and upon revealing this to her family, my sister-in-law immediately proclaimed that it would be a girl.
How? When my wife described her first dealings with morning sickness and a low-grade constant feeling of nausea, my SIL who has one boy and one girl, declared that this indicates that my wife is carrying a female.
My SIL further provided that all of her friends who experienced morning sickness, nausea, etc. early on also had girls and so according to her, that clinches it. My mother-in-law agreed.
So knowing that I could google this phenomenon to get the more definitive scientific answer, I instead turn here for the less reliable but alway more amusing anecdotal evidence.
Incidentally, we’re fine either way with regard to gender; if we get a healthy baby in the end, whether it is a boy or a girl is wholly irrelevant.