Hun, try have intercourse at least 3 days before ovulation and not anywhere near ovulation. Girls are more likely to be conceived around this point x
I was told on the gender dreaming site to just do it once at positive opk because dh can't do an abstain because of his age, and live never fallen pregnant with frequent release, so should carry on as normal but only have one actual attempt. To be honest I've concieved anywhere from day of O right up to 5 days before and always had a boy anyway so timing hasn't made much difference for me. It was purely coincidence that we only ended up doing it once in the window this month.