I had heard of this a bit of a different way of you hold it over your wrist and then it will go boy or girl, stop and continue on until it shows the number of kids you have. With that I always got B,B,B,G.
I just did it the way you explained and got the same thing, B,B,B,G.
It must not be counting my miscarriages as I have had two.
I also did the ring over my belly to see what it would do and it went crazy insane spinning circles super fast.
I SO hope that this turns out to be right and I get a little princess to raise with my three wonderful princes!