Congrats on your pregnancy!!!!!!
I definitely think there is something behind the Shettles method, even though I've read many articles that say it's been proved wrong. In terms of genetics and your odds of having the same gender, according to an anaesthisiologist I've spoken to, she says after having one baby, your chance of the second bub being the same gender is 85 %, the third baby goes down to 65%, but then by the 4th pregnancy, the odds of having the same gender go back to 50/50, so you've got a good chance, I think we may have just needed the "experience" of active boys before we could/can truly appreciate a girl! That's the way I'm looking at it!!
Take care and keep me posted xx