with my first is was, with my second it was sometimes. I tried it several times with my second and it would fizz sometimes and not others, but that's all depending on what you eat/drink too. I only did it once with my first. and the Chinese calendar was wrong with my second too, but right with my first.

I've been told to wait until after 10 weeks. I'm almost 17 so I'm going to do it for fun. I don't find out gender for another 3 weeks. the Chinese calender was wrong with my first

a girl I know did it with both her pregnancies. the first time it was right the second time it wasn't lol

I did mine at 7 weeks it said girl however I am having a boy. lol. but someone also said you had to do it certain weeks and I think I did it too early. haven't tried again though. Chinese Calender said girl too and that was wrong.