For the women who got pregnant on ovulation day...

Most of you are probably, to some degree, aware of the Shettles Method. I know it's not a 100% guarantee at all, but I'm curious to know the gender of babies conceived on the day of ovulation.

I conceived the day I ovulated, not purposefully trying for a boy at all, and am now convinced I'm having a boy. I'd be happy either way, but I just want to know how likely it is that I could have a girl... I would love to have a girl first.

Thank you in advance to any replies. :)