Gender predictors ?

Melissa • I`ve had 3 preg I lost the first then had my rainbow baby then I lost my son this year trying for baby 4(1 living child)
Since I don't know the exact day I conceived I'm really in limbo between a boy or girl I either conceived the last day of September which it the. Says a girl but if I conceived on October 1st it says a boy lol does anyone else's use those? They've always been right for me and all of my friends!