I never heard this when I was pregnant with my girls!
Have you tried it? Was it accurate?
For those who don't know, I guess you put your pee on baking soda and if it bubbles and fizzes a lot its a boy. If not then its a girl? I guess lol
I just did it, It didn't do anything! So according to baking soda its a girl! Lol We find out in 4 weeks so ill have to update :)