Baking soda gender test

Christina • Momma of 1, step momma to 2, and expecting a baby in November! My heart is full.
So I'm 7 weeks 2 days roughly. I decided to test the baking soda gender theory. I used a couple teaspoons of baking soda and just enough urine to cover it. 
It fizzled like a soda when you pour it into a glass which indicates a boy result. My SO did one with his urine as well and it nearly bubbled over! I'm going to try again when I'm further along. 
We're also doing the blood test to determine gender at 9 weeks and of course the ultrasound later on. I can't wait to compare results to each test and then to the moment of truth at birth!