Is my wife carryin a girl or a boy?

I'm so excited to have my third child!! I have come to some Chinese pregnancy calendar sites and some of them says that my wife is carryin a girl, while the other says its a boy!

Is there really a 50/50 chance either way?

"It didn't work for me...it said I was going to have an girl . Had my ultrasound done last month and it clearly is an Boy. Congrats and best of luck to you."

"There is a girl that I work with that swears by this calendar...We have quizzed all of the people at work and believe it or not when they got pregnant and what the chinese calandar said was correct!"

We've heared too many sounds about the question. Here is what the expert say:

Although the Chinese Pregnancy Calendar is quite accurate sometimes, it is not reliable yet. Today we use it only for fun and entertainment. If you really want to know for sure that what the baby's gender is, you'dd better to opt for an ultrasound during the 7th or 8th month of your pregnancy, or 3d scan!