hi, i'm ttc and have started using the LH tests but have not had a positive result yet. It's day 19 and i've been testing since my period ended. I usually ovulate around day 15 so I'm wondering if 1-2 bf a day would be enough to alter the LH reading. Very on edge, just want to fall pregnant... Started doing tests twice daily, but is this necessary? Arrrgghhh!!!